ShadowBox design token

[dickermoshe]

Use case

Provide shadows as a configurable token for a design system.

Proposal

Just like Color and TextStyle tokens, there should also be BoxShadow tokens

[dickermoshe]

I would like to create a PR for this. lmk if this is something you would be interested in

[tilucasoli]

We have been considering a way to generalize and tokenize every attribute. I'm writing a RFC of this idea, I'll let you know when it publicly published.