Use css-color module

[asamuzaK]

Fix #3657

Benchmark result

Benchmark	main	patch
# dom/get-computed-style/getComputedStyle() on document.body #	jsdom x 24,411 ops/sec ±2.90% (88 runs sampled)	jsdom x 28,467 ops/sec ±1.05% (89 runs sampled)
# dom/get-computed-style/getComputedStyle() on element with non-rgb color #	jsdom x 24,564 ops/sec ±1.24% (89 runs sampled)	jsdom x 29,178 ops/sec ±0.91% (91 runs sampled)
# dom/get-computed-style/getComputedStyle() on element with rgb color #	jsdom x 14,097 ops/sec ±4.15% (85 runs sampled)	jsdom x 13,822 ops/sec ±2.08% (84 runs sampled)

Ignore the 2nd getComputedStyle() on element with non-rgb color as it simply failed.
It looks like jsdom does not pass unsupported colors, e.g. color-mix(), correctly to getSpecifiedColor().
We need to fix https://github.com/jsdom/jsdom/blob/main/lib/jsdom/living/helpers/style-rules.js#L175 to support them?

[asamuzaK]

We need to fix https://github.com/jsdom/jsdom/blob/main/lib/jsdom/living/helpers/style-rules.js#L175 to support them?

I found out that cssstyle only supports hex, rgb and hsl.
https://github.com/jsdom/cssstyle/blob/main/lib/parsers.js#L289
I think that css-color may also be useful for cssstyle.

[asamuzaK]

We need to fix https://github.com/jsdom/jsdom/blob/main/lib/jsdom/living/helpers/style-rules.js#L175 to support them?

I found out that cssstyle only supports hex, rgb and hsl. https://github.com/jsdom/cssstyle/blob/main/lib/parsers.js#L289 I think that css-color may also be useful for cssstyle.

Filed a PR on cssstyle Extend CSS color support with css-color module