fix(): unwrap list of strings instead of strings in main.dart

just to show something in the UI from the api requests

lib/main.dart

@@ -73,8 +73,10 @@ class _MyHomePageState extends State<MyHomePage> {
       _counter++;
     });
   }
-  void show_result(Future<String> future_id) async {
-    id = await future_id;
+  // TODO :find a better way to show the list
+  void show_result(Future<List<String>> future_id) async {
+    var tmp = await future_id;
+    id = tmp[0];
     setState(() { });
   }