Add user agent

lib/services/runtime_details_service.dart

@@ -0,0 +1,24 @@
+import 'dart:io';
+
+import 'package:hiddify/utils/utils.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+class RuntimeDetailsService with InfraLogger {
+  late final PackageInfo _packageInfo;
+
+  String get appVersion => _packageInfo.version;
+  String get buildNumber => _packageInfo.buildNumber;
+
+  late final String operatingSystem = Platform.operatingSystem;
+  late final String userAgent;
+
+  Future<void> init() async {
+    loggy.debug("initializing");
+    _packageInfo = await PackageInfo.fromPlatform();
+    userAgent = "HiddifyNext/$appVersion ($operatingSystem)";
+
+    loggy.info(
+      "os: [$operatingSystem](${Platform.operatingSystemVersion}), processor count [${Platform.numberOfProcessors}]",
+    );
+  }
+}

lib/services/service_providers.dart

@@ -1,6 +1,7 @@
 import 'package:hiddify/services/connectivity/connectivity.dart';
 import 'package:hiddify/services/files_editor_service.dart';
 import 'package:hiddify/services/notification/notification.dart';
+import 'package:hiddify/services/runtime_details_service.dart';
 import 'package:hiddify/services/singbox/singbox_service.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
@@ -14,6 +15,10 @@ NotificationService notificationService(NotificationServiceRef ref) =>
 FilesEditorService filesEditorService(FilesEditorServiceRef ref) =>
     FilesEditorService();
 
+@Riverpod(keepAlive: true)
+RuntimeDetailsService runtimeDetailsService(RuntimeDetailsServiceRef ref) =>
+    RuntimeDetailsService();
+
 @Riverpod(keepAlive: true)
 SingboxService singboxService(SingboxServiceRef ref) => SingboxService();