Add sidebar stats for large screens

lib/features/common/stats_provider.dart

@@ -0,0 +1,23 @@
+import 'package:hiddify/data/data_providers.dart';
+import 'package:hiddify/domain/singbox/singbox.dart';
+import 'package:hiddify/features/common/connectivity/connectivity_controller.dart';
+import 'package:hiddify/utils/utils.dart';
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+
+part 'stats_provider.g.dart';
+
+@riverpod
+class Stats extends _$Stats with AppLogger {
+  @override
+  Stream<CoreStatus> build() async* {
+    final serviceRunning = await ref.watch(serviceRunningProvider.future);
+    if (serviceRunning) {
+      yield* ref
+          .watch(coreFacadeProvider)
+          .watchCoreStatus()
+          .map((event) => event.getOrElse((_) => CoreStatus.empty()));
+    } else {
+      yield* Stream.value(CoreStatus.empty());
+    }
+  }
+}