refactor : editor simulate build

移除了枚举定义类型：EDefaultBuildPipeline
修改了EditorSimulateModeHelper.SimulateBuild()方法

Assets/YooAsset/Runtime/ResourcePackage/PlayMode/EditorSimulateBuildParam.cs

@@ -0,0 +1,8 @@
+
+namespace YooAsset
+{
+    public class EditorSimulateBuildParam
+    {
+        public string PackageName;
+    }
+}