Room admins can change user roles (#2423)

Allow Admins to modify room member roles:

- Add a 'roles and permissions' option for each room.
- Allow promoting users to admins, adding or removing moderators, and demote yourself if you're and admin.

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

tools/localazy/config.json

@@ -120,7 +120,9 @@
         "screen_notification_settings_edit_failed_updating_default_mode",
         "screen_polls_history_title",
         "screen_notification_settings_mentions_only_disclaimer",
-        "screen_start_chat_error_starting_chat"
+        "screen_start_chat_error_starting_chat",
+        "screen_room_change_.*",
+        "screen_room_roles_.*"
       ]
     },
     {