add room account data hook

src/app/hooks/storage/useRoomAccountData.ts

@@ -0,0 +1,20 @@
+import { PendingObservableResult } from 'neurone/lib/utils/observable';
+import { useMemo } from 'react';
+import { JoinAccountDataObject } from '../../../client/storage/collections';
+import { useClient } from '../useClient';
+import { useObservableValuePromise } from '../useObservableValue';
+
+export const useRoomAccountData = (
+  roomId: string
+): PendingObservableResult<JoinAccountDataObject[]> => {
+  const ct = useClient();
+
+  const eventsPromise = useMemo(
+    () => ct.storage.joinAccountData.observableRead.queryIndex('roomId', roomId),
+    [ct, roomId]
+  );
+
+  const eventsResult = useObservableValuePromise(eventsPromise);
+
+  return eventsResult;
+};