Add auto connect on start

lib/core/prefs/service_prefs.dart

@@ -0,0 +1,20 @@
+import 'package:hiddify/data/data_providers.dart';
+import 'package:hiddify/utils/pref_notifier.dart';
+import 'package:hiddify/utils/utils.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'service_prefs.g.dart';
+
+@Riverpod(keepAlive: true)
+class StartedByUser extends _$StartedByUser with AppLogger {
+  late final _pref =
+      Pref(ref.watch(sharedPreferencesProvider), "started_by_user", false);
+
+  @override
+  bool build() => _pref.getValue();
+
+  Future<void> update(bool value) {
+    state = value;
+    return _pref.update(value);
+  }
+}