[native] Introduce ColorSelectorButton component
Summary:
First step in redesigning the ColorPicker component on native to match the ColorSelector component on web introduced by @atul.
ColorSelectorButton is a new component that will work with ColorSelector to replace ColorPicker on native.
See the full plan for the ColorPicker redesign in this Linear issue.
Test Plan:
Tested on iOS 15.4 and works as expected:
Reviewers: atul
Reviewed By: atul
Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga, benschac, atul
Differential Revision: https://phabricator.ashoat.com/D3790