Stabilize framework integrations

[3Shain]

• Angular
  • A scheduler is required to adapt zone-less applications
• React
  • Although the concurrent features make it so painful to implement an integration (of reading external source) with ergonomics (have to write boilerplate hooks), it's almost solved (with de-opt).
• Vue
  • Almost done, by hacking into ReactiveEffect. It's universal, that makes cell work anywhere native ref can work.
• Svelte
  • Almost not a problem, since svelte supports object with .subscribe natively
• Solid
  • Waiting for feedback of feat: add enableExternalSource for reactivity interoperability solidjs/solid#739

[redbar0n]

seems the solidjs commit was merged