update download system

remove timeout

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

@@ -0,0 +1,39 @@
+
+namespace YooAsset
+{
+    internal abstract class FSLoadBundleOperation : AsyncOperationBase
+    {
+        /// <summary>
+        /// 加载结果
+        /// </summary>
+        public BundleResult Result { protected set; get; }
+
+        /// <summary>
+        /// 下载进度
+        /// </summary>
+        public float DownloadProgress { protected set; get; } = 0;
+
+        /// <summary>
+        /// 下载大小
+        /// </summary>
+        public long DownloadedBytes { protected set; get; } = 0;
+    }
+
+    internal sealed class FSLoadBundleCompleteOperation : FSLoadBundleOperation
+    {
+        private readonly string _error;
+
+        internal FSLoadBundleCompleteOperation(string error)
+        {
+            _error = error;
+        }
+        internal override void InternalStart()
+        {
+            Status = EOperationStatus.Failed;
+            Error = _error;
+        }
+        internal override void InternalUpdate()
+        {
+        }
+    }
+}