能否添加一个全局或局部代理的设置

### Please make sure of the following things

- [X] I have read the [documentation](https://alist.nn.ci).
- [X] 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

部分网盘地址国内机器无法访问，如果能添加一个http代理设置或socks代理就好了。

### Suggested solution / 实现思路

_No response_

### Additional context / 附件

_No response_