Operation handles support error queries

操作句柄支持错误信息查询。

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

@@ -53,6 +53,11 @@ namespace YooAsset
 		/// </summary>
 		public EStatus Status { protected set; get; } = EStatus.None;
 
+		/// <summary>
+		/// 最近的错误信息
+		/// </summary>
+		public string LastError { protected set; get; } = string.Empty;
+
 		/// <summary>
 		/// 引用计数
 		/// </summary>
@@ -105,7 +110,7 @@ namespace YooAsset
 		/// <summary>
 		/// 销毁资源对象
 		/// </summary>
-		public virtual void Destory()
+		public virtual void Destroy()
 		{
 			IsDestroyed = true;
 		}