Patch Changes

• Move Collections to their own packages (#252)

  • Move local-only and local-storage collections to main @tanstack/db package
  • Create new @tanstack/electric-db-collection package for Electric SQL integration
  • Create new @tanstack/query-db-collection package for TanStack Query integration
  • Delete @tanstack/db-collections package (removed from repo)
  • Update example app and documentation to use new package structure

  Why?

  • Better separation of concerns
  • Independent versioning for each collection type
  • Cleaner dependencies (electric collections don't need query deps, etc.)
  • Easier to add more collection types moving forward