Add multi-resolution playback support

frontend/lib/services/api_service.dart

@@ -43,11 +43,24 @@ class ApiService {
     );
   }
 
-  Future<http.Response> changePassword(String oldPassword, String newPassword) async {
+  Future<http.Response> getPlaybackOptions(String roomId) async {
+    return await http.get(
+      Uri.parse("${settings.baseUrl}/api/rooms/$roomId/playback-options"),
+      headers: _headers,
+    );
+  }
+
+  Future<http.Response> changePassword(
+    String oldPassword,
+    String newPassword,
+  ) async {
     return await http.post(
       Uri.parse("${settings.baseUrl}/api/user/change-password"),
       headers: _headers,
-      body: jsonEncode({"old_password": oldPassword, "new_password": newPassword}),
+      body: jsonEncode({
+        "old_password": oldPassword,
+        "new_password": newPassword,
+      }),
     );
   }
 }