Add "Assign Admin" button to the rooms (#156)

* wip on make admin button

* Finish assign admin button

* fixes from pr

* update readme; remove unnecessary console.log; add assign admin to room directory and room view; rename user_id label; set own MXID by default; fix room name display when there is no name

src/resources/room_directory.tsx

@@ -27,8 +27,7 @@ import {
 } from "react-admin";
 import { useMutation } from "@tanstack/react-query";
 import AvatarField from "../components/AvatarField";
-
-
+import { MakeAdminBtn } from "./rooms";
 const RoomDirectoryPagination = () => <Pagination rowsPerPageOptions={[100, 500, 1000, 2000]} />;
 
 export const RoomDirectoryUnpublishButton = (props: DeleteButtonProps) => {
@@ -154,6 +153,7 @@ export const RoomDirectoryList = () => (
       <NumberField source="num_joined_members" sortable={false} label="resources.rooms.fields.joined_members" />
       <BooleanField source="world_readable" sortable={false} label="resources.room_directory.fields.world_readable" />
       <BooleanField source="guest_can_join" sortable={false} label="resources.room_directory.fields.guest_can_join" />
+      <MakeAdminBtn />
     </DatagridConfigurable>
   </List>
 );