Add `HexAlphaColorPicker`

[omgovich]

Closes #161

Adding new HexAlphaColorPicker component to work with "#rrggbbaa" and "#rgba" color formats.

[github-actions[bot]]

Size Change: +79 B (+2%)

Total Size: 4.69 kB

Filename	Size	Change
dist/index.module.js	4.69 kB	+79 B (+2%)

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