Addon-controls: Expose presetColors for the color control

[Orpheusp]

Issue: #10167

What I did

• Exposed SketchPickerProps.presetColors for the color control component.
• Stop click event propagation at the popup level, to give user the chance to click on the Hex input box and edit the color value this way. One side-effect of this change is that now the user will have to click on the color control button to close the color picker, instead of closing it automatically per mouse click.

How to test

• Is this testable with Jest or Chromatic screenshots? No.
• Does this need a new example in the kitchen sink apps? No.
• Does this need an update to the documentation? Yes, included in this PR.

If your answer is yes to any of these, please make sure to include it in your PR.

[shilman]

Looks great! Will test and merge later today. 🎉🎉🎉

[shilman]

@Orpheusp made a couple minor changes:

• capitalized story per our current naming convention
• Tweaked the event propagation logic to restore the old behavior for clicks outside the input area

Great first contribution 👏 👏 👏