Improving Documentation: WIP

[digitalbase]

Clean up documentation

Full PR + progress available at https://github.com/nostr-dev-kit/ndk/pull/344 Preview URL https://ndkdocs.asknostr.site/

Some notes:

• Items with ✅ in sidebar are mostly done
• Items with ❌ in sidebar are mostly done, unless they have things highlighted below
• Items with ⛔ in sidebar have docs, but need to be linked+cleaned up

Todo List

• [x] Move vitepress to root and use rewrites to clean up paths
• [x] Upgrade vitepress
• [x] Introduction/Essential pages
• [x] Make sure changelogs can be found
• [x] Fix snippets.
• [x] Fundamentals
  • [x] Events
  • [ ] Signers WIP
    • [ ] Add QR code / Nostrconnect:// docs remote signer docs
  • [x] Publishing
  • [x] Connecting
    • [ ] Explain/Cleanup Outbox Docs
  • [ ] Wallets
  • [ ] Zaps
  • [ ] ...
• [x] Link to snippets on key pages
• [ ] Try to find (or remove) API reference link
• [ ] Remove warnings (homepage and main intro) about Docs WIP
• [ ] Remove ✅ ❌ ⛔ icons

Changes made that need double check

• core/tsconfig -> added paths. This makes the snippets in core/docs/snippets have biome/linting
• upgrade bun 1.3.0 and node to +22.