fix: interface fixes

lib/mobile_example.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'dart:math';
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:gymlink_module_web/main_mobile.dart';
 import 'package:gymlink_module_web/providers/main.dart';
 import 'package:http/http.dart' as http;
@@ -32,6 +33,8 @@ class MyExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    SystemChrome.setPreferredOrientations(
+        [DeviceOrientation.portraitUp, DeviceOrientation.portraitDown]);
     return MaterialApp(
       title: 'GymLink Example App',
       debugShowCheckedModeBanner: false,