Adding base project of flutter-hybrid

lib/providers/token_manager.dart

@@ -0,0 +1,17 @@
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class TokenManager {
+  static const storage = FlutterSecureStorage();
+
+  static Future<void> setToken(String token) async {
+    await storage.write(key: 'token', value: token);
+  }
+
+  static Future<String?> getToken() async {
+    return await storage.read(key: 'token');
+  }
+
+  static Future<void> removeToken() async {
+    await storage.delete(key: 'token');
+  }
+}