上传框架，上传unitask

Assets/08.UniTask/Runtime/UnityAsyncExtensions.MonoBehaviour.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Threading;
+
+namespace Cysharp.Threading.Tasks
+{
+    public static partial class UnityAsyncExtensions
+    {
+        public static UniTask StartAsyncCoroutine(this UnityEngine.MonoBehaviour monoBehaviour, Func<CancellationToken, UniTask> asyncCoroutine)
+        {
+            var token = monoBehaviour.GetCancellationTokenOnDestroy();
+            return asyncCoroutine(token);
+        }
+    }
+}