refactor(token): add token storage, remove hive

lib/core/utils/pref_utils.dart

@@ -1,34 +0,0 @@
-import 'package:shared_preferences/shared_preferences.dart';
-
-class PrefUtils {
-  static SharedPreferences? _sharedPreferences;
-
-  PrefUtils() {
-    // init();
-    SharedPreferences.getInstance().then((value) {
-      _sharedPreferences = value;
-    });
-  }
-
-  Future<void> init() async {
-    _sharedPreferences ??= await SharedPreferences.getInstance();
-    print('SharedPreference Initialized');
-  }
-
-  ///will clear all the data stored in preference
-  void clearPreferencesData() async {
-    _sharedPreferences!.clear();
-  }
-
-  Future<void> setThemeData(String value) {
-    return _sharedPreferences!.setString('themeData', value);
-  }
-
-  String getThemeData() {
-    try {
-      return _sharedPreferences!.getString('themeData')!;
-    } catch (e) {
-      return 'primary';
-    }
-  }
-}