Unity3D项目Plugins目录组织 https://blog.csdn.net/linxinfa/article/details/102978005 IPreprocessBuild 继承提供打包前，打包后接口 BuildAssetBundles UnityWebRequest’s DownloadHandlerAssetBundle / LoadFromFile / LoadFromMemoryAsync 数据完整性校验方式 AndroidManfiest对象获得依赖
