Feat/react style system ssr

[ricokahler]

This one is a big work in progress but it's a big one for performance!

• Hacker UI will be using react-style-system and it's included babel plugin. This plugin extracts out static CSS and re-writes imports to use a lighter and smaller version of createStyles. This is a MAJOR speed improvement for both bundle size, TTI, and rendering time.
• Refactors the exampleLoader to use ES modules so that its implementation is tree-shakable. This removes all the of the font-awesome icons that were left in the docs bundle
• Adds in code splitting on each route and for the code examples text.

All of this takes the main bundle of the Hacker UI docs from 1.2 MiB to 340KiB!

[github-actions[bot]]

Size Change: -250 B (1%)

Total Size: 23.8 kB

Filename	Size	Change
dist/bundle.esm.js	11.6 kB	-66 B (0%)
dist/bundle.umd.js	12.2 kB	-184 B (1%)

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