Optimized asset system and patch system framework

优化了资源定位不正确导致的错误报告方式。
YooAssets.ProcessOperation()重命名为YooAssets.StartOperation()
YooAssets.GetBundleInfo()已经移除方法。
YooAssets.IsNeedDownloadFromRemote()新增加方法。

Assets/YooAsset/Runtime/AssetSystem/Provider/CompletedProvider.cs

@@ -0,0 +1,33 @@
+
+namespace YooAsset
+{
+	internal sealed class CompletedProvider : ProviderBase
+	{
+		public override float Progress
+		{
+			get
+			{
+				if (IsDone)
+					return 1f;
+				else
+					return 0;
+			}
+		}
+
+		public CompletedProvider(AssetInfo assetInfo) : base(assetInfo)
+		{
+		}
+		public override void Update()
+		{
+			if (IsDone)
+				return;
+
+			if (Status == EStatus.None)
+			{
+				Status = EStatus.Fail;
+				LastError = MainAssetInfo.Error;
+				InvokeCompletion();
+			}
+		}
+	}
+}