Skin Tone Accessibility Updates

[neckenth]

In this PR, I added a few changes to assist with keyboard accessibility and general usage of the Skin Tone Picker.

1 - Unrelated: Adds an aria-label to the Clear Search "x" button
2 - Adds functionality to persist selected skin tone in localStorage
3 - Allows a user to tab into the Skin Tone Picker
4 - Adds a prop, fanOutDirection to the <SkinTonePicker /> component to maintain the default fan-out behavior - which keeps the selected tone in-place and fans all remaining colors to to the left - and adds an option to specify the opposite, where colors will fan out to the right of the selected tone. The goal here was to aid with tab-ability and not interrupt the left --> right tab flow.

skin_tone_accessibility.mov

[ealush]

Thank you for taking the time to improve the picker @neckenth!
I have been a bit sick in the past week, so I wasn't yet able to look at the code, but at least in terms of usability this looks great.

I'll take a deeper look in the upcoming days, sorry for the delay.

[ealush]

Hey @neckenth, I left a few comments. Let's sort these out before we can continue.

[neckenth]

Hey @neckenth, I left a few comments. Let's sort these out before we can continue.

Hey @ealush, thank you for these comments, and I apologize for the delay. Just responded to your code review. Please let me know your thoughts!