[Design System] Initial groundwork for Foundation, Button and Gallery

[alpavanoglu]

Description

Design System protocol should be added to Android codebase so that we can fully utilise this across platforms. There are two categories of content:

Please find the iOS PR here which contains further information: https://github.com/wordpress-mobile/WordPress-iOS/pull/22092

Acceptance Criteria

• Colors should be added.
• Spacings/Length should be added.
• Fonts should be added.
• Button should be added. It should contain all variations and intractable states and haptic feedback.
• A gallery added that contains the two categories:
  1. Foundation: Contains Colors, Fonts and Length
  2. Components: Contains the Design System Button.
• Gallery is only visible on Debug mode.

Consider implementing as a separate module so the whole Design System code can be isolated.

[guarani]

👋 Hey @aditi-bhatia, is this ready to close?

[aditi-bhatia]

Hi @guarani, the Foundation -> Lengths and Components -> Button sections have not been implemented yet, so I don't think this ticket is ready to be closed.

[guarani]

Gotcha 👍 Nice work on the design system screens you made (just browsing it now on Android).

[aditi-bhatia]

Thank you @guarani!