Add inline previews also for oklch(), etc colors

[ai]

Recently @SomeoneToIgnore added inline color support for rgba() colors in CSS (thanks!).

It is popular but doesn’t cover all CSS.

With a little of work we can add other functions support like:

• oklch(), oklab()
• hsl()
• lch(),lab()
• color(display-p3)

Why we should support for instance oklch():

1. It is a modern way, which has many DX benefits like be able to tune color just by numbers. See this OKLCH guide.
2. It allows working with P3 colors on new HDR screens.
3. Tailwind also is based on top of OKLCH color.

Most of these color functions is just a matrix multiplication (for instance, math for OKLCH).

There is a question what to do for P3 and other over-sRGB colors. I think for this issue we can support only sRGB (if we don’t have HDR support in Zed video subsystem).

[ai]

Sorry, GitHub UI issue