[Design] Organize the design assets in Figma

[eryc-cc]

Summary

Right now everything is scattered around, mainly because I'm being scrappy: switching from design to code, etc.

I'd like to have it very organized and documented to any dev can find themselves there, and if/when we add designers, they can also find themselves pretty easily there.

Things to-do:

• Create the design system tokens
  • Typography
  • Components
• Organize the screens together:
  • Add all of the screens we currently have in a single page
  • Replace the components with the design tokens within Figma
  • Add Flows (for interactions/animations) to their own page