motion: add first class framer support

[JonasBa]

Add first class framer motion support to theme.

@gggritso I'll let you experiment with the transition definition for the drawer animation and we'll figure out if we can modify one of our current definitions or introduce a brand new one, but I'd like to defer that until we see what the desired transition would look like.

[gggritso]

LGTM! I'll tinker with the the animation next week, but my guess is:

1. We'll need to adjust the current durations and space them out (e.g., I'd expect a "slow" animation that covers a lot of the screen to be in the 300-500ms range)
2. We might need to introduce more sophisticated animation tokens that are physics-based, to support the current modals

In any case, I'll let you know once I try it out. Thanks for putting this together!

P.S. Maybe a little surprising that "framer" is nested at the same level as "slow" under theme.motion but TBH I was about to do the same thing

[JonasBa]

P.S. Maybe a little surprising that "framer" is nested at the same level as "slow" under theme.motion but TBH I was about to do the same thing

I could do something like add use String() object and then add a .framer property via proxy. That way I we could define motion.enter.fast.framer 🤔

[gggritso]

@JonasBa 🤔 I leave it to you! IMO it's fine as-is, too! Good to keep things simple

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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