feat(localization): add Montenegrin language support

[YassinNouh21]

📝 Summary

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This PR adds #1398

Description

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• Created Package:

  • Developed montenegrin_localization package to handle Montenegrin language support within the application.

• Dependency Added:

  • Added montenegrin_localization: ^0.1.0+1 to pubspec.yaml to integrate the new localization package.

• Configuration Updates:

  • Updated lib/src/const/config.dart by adding the Montenegrin language entry:

    "cnr": {"name": "Montenegrin", "nativeName": "Crnogorski"}

• Main Application Modifications:

  • Imported the Montenegrin localization package in lib/main.dart:

    import 'package:montenegrin_localization/montenegrin_localization.dart';

  • Added Montenegrin localization delegates:

    MontenegrinMaterialLocalizations.delegate,
    MontenegrinWidgetsLocalizations.delegate,
    MontenegrinCupertinoLocalizations.delegate,

  • Updated supportedLocales to include Montenegrin:

    supportedLocales: [Locale('cnr'), ...S.supportedLocales],

Tests

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🧪 Use Case 1

💬 Description:

• Objective: Ensure that the Montenegrin localization is properly integrated and functional.

• Steps:

  1. Launch the app.
  2. Navigate to the settings or language selection screen.
  3. Select Montenegrin as the preferred language.
  4. Verify that all textual elements are displayed in Montenegrin.

• Expected Result: The app should display all relevant text in Montenegrin, and locale-specific functionalities should operate correctly.

📷 Screenshots or GIFs (if applicable):

Checklist:

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• Coding Standards: Reviewed the code to ensure it adheres to the project's coding standards.
• Testing: Tested the Montenegrin localization functionality to confirm it works as expected.
• Merge Conflicts: Resolved any merge conflicts with the latest main/development branch.
• Branch Status: Ensured the branch is up-to-date with the target branch (main/development).