Support room version 12 (#2399)

* WIP - support room version 12

* add room creators hook

* revert changes from powerlevels

* improve use room creators hook

* add hook to get dm users

* add options to add creators in create room/space

* add member item component in member drawer

* remove unused import

* extract member drawer header component

* get room creators as set only if room version support them

* add room permissions hook

* support room v12 creators power

* make predecessor event id optional

* add info about founders in permissions

* allow to create infinite powers to room creators

* allow everyone with permission to create infinite power

* handle additional creators in room upgrade

* add option to follow space tombstone

src/app/hooks/useMemberPowerCompare.ts

@@ -0,0 +1,28 @@
+import { useCallback } from 'react';
+import { IPowerLevels, readPowerLevel } from './usePowerLevels';
+
+export const useMemberPowerCompare = (creators: Set<string>, powerLevels: IPowerLevels) => {
+  /**
+   * returns `true` if `userIdA` has more power than `userIdB`
+   * returns `false` otherwise
+   */
+  const hasMorePower = useCallback(
+    (userIdA: string, userIdB: string): boolean => {
+      const aIsCreator = creators.has(userIdA);
+      const bIsCreator = creators.has(userIdB);
+      if (aIsCreator && bIsCreator) return false;
+      if (aIsCreator) return true;
+      if (bIsCreator) return false;
+
+      const aPower = readPowerLevel.user(powerLevels, userIdA);
+      const bPower = readPowerLevel.user(powerLevels, userIdB);
+
+      return aPower > bPower;
+    },
+    [creators, powerLevels]
+  );
+
+  return {
+    hasMorePower,
+  };
+};