feat: implement /state_ids and fix federation stuff

src/main.rs

@@ -165,6 +165,7 @@ fn setup_rocket() -> (rocket::Rocket, Config) {
                 server_server::get_public_rooms_filtered_route,
                 server_server::send_transaction_message_route,
                 server_server::get_missing_events_route,
+                server_server::get_room_state_ids_route,
                 server_server::get_profile_information_route,
             ],
         )