[Proposal] Organize Storybook folder structure

[langermank]

This PR accompanies this Discussion (hubbers only) about Storybook/Lookbook structure. This is just a start, but with our prospects of single page component docs Storybook becomes even more critical for documentation. If Storybook is organized closer to our more "official" documentation, it may be easier to navigate and parse.

Screenshots

See the preview deploy 😄

Merge checklist

• [ ] Added/updated tests
• [ ] Added/updated documentation
• [ ] Tested in Chrome
• [ ] Tested in Firefox
• [ ] Tested in Safari
• [ ] Tested in Edge

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 0f9813ce5def76550050feb8ce04342d49200f92

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[github-actions[bot]]

size-limit report 📦

Path	Size
dist/browser.esm.js	77.1 KB (0%)
dist/browser.umd.js	77.71 KB (0%)

[langermank]

@primer/react-reviewers crew: should I add a changeset for this? Not sure since its just docs/storybook related 😄 lmk!