Add profile in parameters, initialized page map, group, count.

lib/providers/user_provider.dart

@@ -0,0 +1,20 @@
+import 'package:flutter/material.dart';
+import '../models/user.dart';
+
+class UserProvider extends ChangeNotifier {
+  User? _currentUser;
+
+  User? get currentUser => _currentUser;
+
+  void setCurrentUser(User user) {
+    _currentUser = user;
+    notifyListeners();
+  }
+
+  void logout() {
+    _currentUser = null;
+    notifyListeners();
+  }
+
+  bool get isLoggedIn => _currentUser != null;
+}