如何设置可以支持指定目录http鉴权？

默认整个目录不能上传，删除
想建一个私人目录，想看里面文件需要HTTP鉴权，输入账号密码才能打开看到有什么文件，打开私人目录后可以上传删除。

Start by reading the repository's HTTP static-file serving and upload/delete entry points, then trace how directory access is configured. Define how credentials are supplied and how authentication applies to listing, uploading, and deleting within one private directory; done means the requested directory is protected while other directories retain their existing behavior.

Written by the indexing model from the issue text.