yjs: wip adding indexeddb yjs provider wrapper

[dpnova]

Checklist

• [ ] yarn typecheck
• [ ] yarn lint:fix
• [ ] yarn test
• [ ] yarn brl
• [ ] yarn changeset
• [ ] ui changelog
• [ ] update yjs docs to show new provider as option
• [ ] find another example of a custom provider (eg. supabase) to add to docs
• [ ] add indexeddb provider to yjs demo perhaps?

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Latest commit: 29c0a5f5e64da57fd61e8d2b61f16d4c6b445f6b

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Project	Deployment	Preview	Comments	Updated (UTC)
plate	Ready	Preview	Comment	Sep 25, 2025 0:01am