合并2.x功能到1.5

1. 增加获取缓存文件信息的异步操作
2. 支持资源下载器合并
3. 新增资源导入器

Assets/YooAsset/Runtime/CacheSystem/PersistentTools.cs

@@ -37,18 +37,23 @@ namespace YooAsset
 		{
 #if UNITY_EDITOR
 			return StringUtility.Format("file:///{0}", path);
-#elif UNITY_IPHONE
-			return StringUtility.Format("file://{0}", path);
-#elif UNITY_ANDROID
-			return path;
-#elif UNITY_STANDALONE_OSX
-			return new System.Uri(path).ToString();
-#elif UNITY_STANDALONE
-			return StringUtility.Format("file:///{0}", path);
 #elif UNITY_WEBGL
-			return path;
+            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);
 #elif UNITY_OPENHARMONY
 			return path;
+#else
+            return path;
 #endif
 		}
 	}