Add DOTween async TweenCallback

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTask.Factory.cs

@@ -157,6 +157,28 @@ namespace Cysharp.Threading.Tasks
             return () => asyncAction(cancellationToken).Forget();
         }
 
+#endif
+
+#if UNITASK_DOTWEEN_SUPPORT
+
+        /// <summary>
+        /// Create async void(UniTaskVoid) TweenCallback.
+        /// For example: tween.OnComplete(UniTask.TweenCallback(async () => { /* */ } ))
+        /// </summary>
+        public static DG.Tweening.TweenCallback TweenCallback(Func<UniTaskVoid> asyncAction)
+        {
+            return () => asyncAction().Forget();
+        }
+
+        /// <summary>
+        /// Create async void(UniTaskVoid) TweenCallback.
+        /// For example: tween.OnComplete(UniTask.TweenCallback(FooAsync, this.GetCancellationTokenOnDestroy()))
+        /// </summary>
+        public static DG.Tweening.TweenCallback TweenCallback(Func<CancellationToken, UniTaskVoid> asyncAction, CancellationToken cancellationToken)
+        {
+            return () => asyncAction(cancellationToken).Forget();
+        }
+
 #endif
 
         /// <summary>