DS - Improve Storybook formatting to better match app use

[TimRoe]

Description

As part of PR #511, 8px of margin was added to the story wrapper for Checkbox group to better match app use so content would not be flush against the side of the display. This ticket is to create a standard story wrapper for components that incorporates this and other features.

Acceptance Criteria

• Create a standard story wrapper component that makes it behave more similar to app use
  • Incorporate 8 px margin around the story to provide some padding to the display edge
  • Incorporate a wrapping ScrollView so that large content (e.g. increased font sizes) allow scrolling to see the content instead of just flowing off the screen
• Special case of note: most stories center the component horizontally and vertically which is fine, but the Text component should not be as it'd be confusing around the text being left aligned; have conditional behavior as needed in the story wrapper