Platform Component(s) around Color Picker

[droshev]

Is this a bug, enhancement, or feature request?

feature request

Briefly describe your proposal.

Implement new components in platform package:

• [ ] color picker
• [ ] color picker popover
• [ ] color palette

The goals of the task:

• to adopt under the hood ui5 web components for those ones
• document how that would work
• list all issues or future problems
• test theming, content density, other cross-component features