希望增加文件分享功能

### Please make sure of the following things

- [x] I have read the [documentation](https://alist.nn.ci).
- [ ] I'm sure there are no duplicate issues or discussions.
- [x] I'm sure this feature is not implemented.
- [x] I'm sure it's a reasonable and popular requirement.

### Description of the feature / 需求描述

目前版本不支持免账号密码分享文件给朋友，希望增加，感谢！

### Suggested solution / 实现思路

类似cloudreve的分享功能，这样很方便。

### Additional context / 附件

_No response_