added splash screen

lib/view_models/auth_view_model.dart

@@ -44,6 +44,7 @@ class AuthViewModel with ChangeNotifier {
 
   // Auth state
   bool _isLoading = false;
+  bool _isLoggedIn = false;
   bool _isResetPasswordLoading = false;
   String? _errorMessage;
   String? _resetPasswordErrorMessage;
@@ -59,6 +60,7 @@ class AuthViewModel with ChangeNotifier {
   bool _verifyOtpSuccess = false;
 
   bool get isLoading => _isLoading;
+  bool get isLoggedIn => _isLoggedIn;
   bool get isLoadingForgot => _isLoadingForgot;
   bool get isLoadingOtp => _isLoadingOtp;
   bool get isResetPasswordLoading => _isResetPasswordLoading;
@@ -282,6 +284,21 @@ class AuthViewModel with ChangeNotifier {
     }
   }
 
+  Future<void> checkIsLoggedIn() async {
+    final result = await _authRepository.checkIsLoggedIn();
+
+    if (result is Ok<bool>) {
+      if (result.value) {
+        _isLoggedIn = result.value;
+      } else {
+        _isLoggedIn = false;
+      }
+    } else {
+      _isLoggedIn = false;
+    }
+    notifyListeners();
+  }
+
   void clearResetPasswordSuccess() {
     _resetPasswordSuccess = false;