Add reset tunnel option on ios

lib/singbox/service/ffi_singbox_service.dart

@@ -224,6 +224,13 @@ class FFISingboxService with InfraLogger implements SingboxService {
     );
   }
 
+  @override
+  TaskEither<String, Unit> resetTunnel() {
+    throw UnimplementedError(
+      "reset tunnel function unavailable on platform",
+    );
+  }
+
   @override
   Stream<SingboxStatus> watchStatus() => _status;
 

lib/singbox/service/platform_singbox_service.dart

@@ -147,6 +147,24 @@ class PlatformSingboxService with InfraLogger implements SingboxService {
     );
   }
 
+  @override
+  TaskEither<String, Unit> resetTunnel() {
+    return TaskEither(
+      () async {
+        // only available on iOS (and macOS later)
+        if (!Platform.isIOS) {
+          throw UnimplementedError(
+            "reset tunnel function unavailable on platform",
+          );
+        }
+
+        loggy.debug("resetting tunnel");
+        await _methodChannel.invokeMethod("reset");
+        return right(unit);
+      },
+    );
+  }
+
   @override
   Stream<List<SingboxOutboundGroup>> watchOutbounds() {
     const channel = EventChannel("com.hiddify.app/groups");

lib/singbox/service/singbox_service.dart

@@ -52,6 +52,8 @@ abstract interface class SingboxService {
     bool disableMemoryLimit,
   );
 
+  TaskEither<String, Unit> resetTunnel();
+
   Stream<List<SingboxOutboundGroup>> watchOutbounds();
 
   TaskEither<String, Unit> selectOutbound(String groupTag, String outboundTag);