Refactor notifications to use react-query (#1878)

* Move broadcast channel to lib

* Refactor view/com/post/Post and remove temporary 2 components

* Add useModerationOpts hook

* Refactor notifications to use react-query

* Fix: only trigger updates in useModerationOpts when the values have changed

* Implement unread notification tracking

* Add moderation filtering to notifications

* Handle native/push notifications

* Remove dead code

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Co-authored-by: Eric Bailey <git@esb.lol>

src/state/persisted/broadcast/index.ts

@@ -1,6 +0,0 @@
-export default class BroadcastChannel {
-  constructor(public name: string) {}
-  postMessage(_data: any) {}
-  close() {}
-  onmessage: (event: MessageEvent) => void = () => {}
-}