feat(tailwind colors): add exact colors, style, and color name

[nicolas-cherel]

• now supports styles, if a style is used for a figma node, its styles
take precedence on node fills. (probably need factorization for other
frameworks)
• add a setting to only allow named color for exact matches with tailwind
• use figma name, either alias or style for colors. Those colors
need to be added to tailwind configuration.

[davestewart]

Hey @nicolas-cherel - you might want to look at two recently-merged PRs which will affect your code:

• Add Tailwind support for Figma variables #109
• Simplify Tailwind implementation #110 (also modifies how colors are picked)