feat: update material you theming

[Drakeoon]

Summary

We're officially starting the works with Material 3! 🎉 (Material You)

A more detailed description will probably appear on the next branch quite soon

The following changes were done:

• Extracted and differentiated v2 and v3 themes (new themes structure)
• Kept backwards compatibility (v2 is still used by default, will probably change to v3 by default with the ability to go easily return to v2)
• Added v3 theme with:
  • New palette
  • New font sizes definition
  • New theme properties
  • md() helper that can be used with Material 3 tokens - md('md.ref.palette.tertiary90') -> #FFD8E4
  • Fully compliant with Material 3 guidelines

Test plan

As of now, the changes aren't affecting the app. Each PR that covers new components' support will have it's own preview and testing plans

[github-actions]

The mobile version of example app from this branch is ready! You can see it here

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[p-syche]

Total nitpick 🤏 -> if you have MD3Color maybe you should also have MD2Color?

[Drakeoon]

Yeah, definitely. Will talk this through with Luke, as we typically exposed a clean Theme interface and now we would have some conditional types - it will get changed pretty soon, good catch!

[p-syche]

Looks good to me :)

I personally appreciate the most the backwards compatibility 💪

[lukewalczak]

From the code perspective LGTM 🎉 ! I'm planning to run it on devices as well soon.

[Drakeoon]

@lukewalczak I implemented the requested changes. Unfortunately one change is affects the major part of our codebase and causes the build to be red. I suggest creating a separate PR that fixes the build, as there are more than 80 components that need to be adjusted

[lukewalczak]

@Drakeoon, make sense, let's merge that PR and iterate with fixing build on the next one.