ui toolkit binding에 애를 먹어서 새로 Test.cs 만들고 해봤다.참고https://gamedev-resources.com/create-an-item-management-editor-tool-with-ui-toolkit/ Create an item management editor window with UI Toolkit - GameDev ResourcesLearn the fundamentals of ListView, ObjectPicker, and scriptable objects by creating an editor tool with UI Toolkit.gamedev-resources.com