Add Helmlab, Helmgen, and Helmgenlch color spaces (#510)

[facelessuser]

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[facelessuser]

Moved this back to a draft review as we continue to evaluate and explore. The author is also doing some exploration on some aspects, so we'll hold off on having on main until we have a final solution.

With that said, it's certainly possible we could move this ColorAide-Extra if it is felt this is not yet stable enough.

[facelessuser]

I think we have a final version now. We'll have to wait to be sure. We'll have to decide whether we want to ship this in the core package or the extras package first. Even if shipped in the extras package, it could still make it to the core package eventually.

[facelessuser]

We do need to compare this against the official just to make sure we haven't missed anything. There have been so many revisions to the original space that another double check would be good.