added splash screen

lib/data/repositories/auth_repository.dart

@@ -47,4 +47,8 @@ class AuthRepository {
   }) async {
     return _authService.verifyOtp(code: code, email: email);
   }
+
+  Future<Result<bool>> checkIsLoggedIn() async {
+    return _authService.checkIsLoggedIn();
+  }
 }

lib/data/services/auth_service.dart

@@ -113,4 +113,13 @@ class AuthService {
 
     return result;
   }
+
+  Future<Result<bool>> checkIsLoggedIn() async {
+    final prefs = await SharedPreferences.getInstance();
+    final token = prefs.getString('bearer');
+    if (token == null) {
+      return const Result.ok(false);
+    }
+    return const Result.ok(true);
+  }
 }