TEngine全面更新，升级YooAsset2.1.1、UniTask、UIWindow、I2Localization

TEngine全面更新，升级YooAsset2.1.1、UniTask、UIWindow、I2Localization

UnityProject/Packages/YooAsset/Runtime/CacheSystem/PersistentHelper.cs

@@ -0,0 +1,31 @@
+
+namespace YooAsset
+{
+    internal static class PersistentHelper
+    {
+        /// <summary>
+        /// 获取WWW加载本地资源的路径
+        /// </summary>
+        public static string ConvertToWWWPath(string path)
+        {
+#if UNITY_EDITOR
+            return StringUtility.Format("file:///{0}", path);
+#elif UNITY_WEBGL
+            return path;
+#elif UNITY_IPHONE
+            return StringUtility.Format("file://{0}", path);
+#elif UNITY_ANDROID
+            if (path.StartsWith("jar:file://"))
+                return path;
+            else
+                return StringUtility.Format("jar:file://{0}", path);
+#elif UNITY_STANDALONE_OSX
+            return new System.Uri(path).ToString();
+#elif UNITY_STANDALONE
+            return StringUtility.Format("file:///{0}", path);
+#else
+            return path;
+#endif
+        }
+    }
+}