fix #429

ClearCacheBundleFilesAsync重命名为ClearCacheFilesAsync

Assets/YooAsset/Runtime/FileSystem/Operation/FSClearCacheFilesOperation.cs

@@ -0,0 +1,36 @@
+
+namespace YooAsset
+{
+    internal abstract class FSClearCacheFilesOperation : AsyncOperationBase
+    {
+    }
+
+    internal sealed class FSClearCacheFilesCompleteOperation : FSClearCacheFilesOperation
+    {
+        private readonly string _error;
+
+        internal FSClearCacheFilesCompleteOperation()
+        {
+            _error = null;
+        }
+        internal FSClearCacheFilesCompleteOperation(string error)
+        {
+            _error = error;
+        }
+        internal override void InternalOnStart()
+        {
+            if (string.IsNullOrEmpty(_error))
+            {
+                Status = EOperationStatus.Succeed;
+            }
+            else
+            {
+                Status = EOperationStatus.Failed;
+                Error = _error;
+            }
+        }
+        internal override void InternalOnUpdate()
+        {
+        }
+    }
+}