Add documentation for colors component

[vcanales]

Description

Adding documentation for the colors component. This component provides a collection of color tools for Blocks, most of which were already documented on the code itself.

See #22891

How has this been tested?

Documentation only.

Types of changes

Documentation.

Checklist:

• n/a My code is tested.
• n/a My code follows the WordPress code style.
• n/a My code follows the accessibility standards.
• n/a My code has proper inline documentation.
• I've included developer documentation if appropriate.
• n/a I've updated all React Native files affected by any refactorings/renamings in this PR.

[jorgefilipecosta]

LGTM 👍 I guess we can expand a little bit on the withColors and explain which props are injected but I guess we can merge and iterate.

[jorgefilipecosta]

I guess instead of "Experimental hook that combines the functionality of the withColors HOC and PanelColorSettings, with InspectorControls into an easy to use useColors hook.".

We can just say that it provides equivalent functionality to withColors as a react hook.

[vcanales]

I've modified the useColors explanation as you suggested.

[vcanales]

I guess we can expand a little bit on the withColors and explain which props are injected

As I understand it, it injects the colors prop, but I'm not entirely sure what that object contains.

ps. I still don't have write permissions here. I think it's time for me to ask for them :)

[aristath]

Perhaps we should mention at least once what HOC means? Not everyone will understand it's a higher order component. As a non-American I always find it hard to keep track of all undocumented and implied abbreviations.