Feat: Group for each color swatch

[bjarnef]

Description

This PR add a group property to each color swatch, so uui-color-swatches show color swatches grouped if any.
Currently multi selection is possible as in render a uui-color-swatches component per group. We may need to consider this or if all should be grouped inside component?

The uui-color-swatches as slotted content, which may be useful, but could it has default slotted content based on the array of swatches and just pass to in to a property?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)

Motivation and context

How to test?

Screenshots (if appropriate)

Checklist

• If my change requires a change to the documentation, I have updated the documentation in this pull request.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[github-actions]

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud