Force last owner of a room to pass ownership when leaving (#5094)

* Move `ChangeRoles*` classes to their own module so they can be shared

* Hook the change roles screen to the leave room action, add confirmation dialogs

* Use enum instead of sealed interface for `ChangeRoomMemberRolesListType`

* Try to improve communications between nodes

* refactor (leave room) : makes sure to expose only necessary code from api module

* Add `:libraries:previewutils` module to share some test fixtures used for UI previews

* Update screenshots

---------

Co-authored-by: ElementBot <android@element.io>
Co-authored-by: ganfra <francoisg@matrix.org>

tools/localazy/config.json

@@ -335,6 +335,14 @@
       "includeRegex" : [
         "screen\\.bottom_sheet\\.manage_room_member\\..*"
       ]
+    },
+    {
+      "name" : ":features:changeroommemberroles:impl",
+      "includeRegex" : [
+        "screen_room_change_.*",
+        "screen_room_roles_.*",
+        "screen_room_member_list.*"
+      ]
     }
   ]
 }