用于从Unity AssetBundle中提取Live2D Cubism 3文件
Used to extract Live2D Cubism 3 files from Unity AssetBundle
拖放Live2D文件夹到exe上，多个Live2D文件请放到一个文件夹内，将在文件夹所在目录生成Live2DOutput目录
Drag and drop the Live2D folder to the exe. Please put multiple Live2D files into a folder, and the Live2DOutput directory will be generated in the directory where the folder is located
UnityLive2DExtractor.exe live2dfolder key_index