[APP-83] The first day of week in the Calendar based on the User Localisation

[novinfard]

[APP-83]
This PR is to make the first day of the week based on the User Localisation

How user can change the first day of the week?

Users can change the first day of the week via:

• Settings > General > Language & Region > Region:
  This setting influences the first day of the week.

• Settings > Calendar > Start Week On:
  If this option is available, the user can override the regional setting for their preferred first day of the week.

Demo

Monday as the first day of the week	Sunday as the first day of the week

• Check this if you have read and followed the contributing guidelines

Remember to include the following changes:

• README.md
• Tests
• Screenshotting code
• Adding a component? Remember to expose it in the main Backpack.h header file

If you are curious about how we review, please read through the code review guidelines

[github-actions]

Snapshots were updated. Please verify the changes match the expected layout.

' D Backpack-SwiftUI/Tests/BannerAlert/Snapshots/BPKBannerAlertTests/test_multilineBannerAlert.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/BannerAlert/Snapshots/BPKBannerAlertTests/test_multilineBannerAlert.light-mode.png'%0A' D Backpack-SwiftUI/Tests/BannerAlert/Snapshots/BPKBannerAlertTests/test_multilineBannerAlert.rtl.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_differentMonth.dark-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_differentMonth.light-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_differentMonth.rtl.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameDay.dark-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameDay.light-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameDay.rtl.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameMonth.dark-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameMonth.light-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_sameMonth.rtl.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_withAccessoryView.dark-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_withAccessoryView.light-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_rangeSelectionCalendar_withAccessoryView.rtl.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_singleSelectionCalendar.dark-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_singleSelectionCalendar.light-mode.png'%0A' M Backpack-SwiftUI/Tests/Calendar/Snapshots/BPKCalendarTests/test_singleSelectionCalendar.rtl.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_dark.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_dark.light-mode.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_dark.rtl.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_default.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_default.light-mode.png'%0A' D Backpack-SwiftUI/Tests/NavigationTabGroup/Snapshots/BPKNavigationTabGroupTests/test_default.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_clearableField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_clearableField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_clearableField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_disabledField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_errorField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/SearchInputSummary/Snapshots/BPKSearchInputSummaryTests/test_validField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_clearableField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_defaultSettings_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_disabledField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_emptyField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_errorField_withPrefixIcon.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withCustomPrefixText.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withCustomPrefixText.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withCustomPrefixText.rtl.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withPrefixIcon.dark-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withPrefixIcon.light-mode.png'%0A' D Backpack-SwiftUI/Tests/TextField/Snapshots/BPKTextFieldTests/test_validField_withPrefixIcon.rtl.png'