Vuefy color input form element

[OlegZharkov]

This PR implements Vue version of input form color picker

xref: #11076 (comment)
The old interface:

The new interface:

How to test the changes?

• Instructions for manual testing are as follows:
  1. Run with debug tools and choose color_param
  2. Colors should be there

License

• I agree to license these contributions under Galaxy's current license.
• I agree to allow the Galaxy committers to license these and all my past contributions to the core galaxy codebase under the MIT license. If this condition is an issue, uncheck and just let us know why with an e-mail to [email protected].

[hexylena]

Ahh this will make people happier! I'll have to update the training material since we mentioned in a couple places that it was an intentionally restricted colour palette to prevent people choosing bad colours (which really wasn't prevented at all!)

[guerler]

Yes this is very nice. Thanks @OlegZharkov. Previously the idea was that colors can be re-picked easily since a restricted palette is shown, similar to palettes in Excel, although the backend has no restrictions and accepts any color.

[github-actions]

This PR was merged without a "kind/" label, please correct.

[OlegZharkov]

thanks @guerler!