feat: Switch color processing library

[camdecoster]

Description

Switch color processing library from TinyColor to color.

Closes #7523.

Changes

• Change color processing library
  • hsv color strings are no longer permitted
  • rgb()/rgba() strings with decimal 0–1 fractions are now normalized to integers via Color.clean() on input
  • New color specifiers supported:
    • 8-digit hex with alpha (#rrggbbaa) and 4-digit hex short (#rgba)
    • Space-separated and slash-syntax rgb/rgba/hsl (rgba(255 0 0 / 0.5))
    • hsla() and hwb() color functions
• There are subtle output differences in darken/lighten/mix (HSL multiplicative vs. tinycolor's additive)
• Update/refactor method calls for dealing with colors
• Update tests per library change

Testing

• Check CI for broken tests
• Run npm run test-jasmine and verify that all tests pass
• Run npm run test-image and verify that all image-baseline diffs match the regenerated baselines in this PR
• Verify that npm run schema produces no diff against test/plot-schema.json
• Run devtools and open the new mock color_syntax_formats and verify that it runs correctly without any errors

Notes

• The new library allows for use of modern CSS color syntax

[camdecoster]

I created a couple of PRs (#78 and #81) in a dependency used by color that will add some new features for parsing color strings that would bring it closer to parity with TinyColor. The maintainer recently merged one of these and will (hopefully) be merging the other soon. Once he publishes a new release, I'll be able to use it in plotly.js.