把6盘离线下载加入alist

### 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

https://drive.2dland.cn/ 即6盘，这个网盘主打离线下载，目前alist支持的有115 pk 迅雷，希望加入6盘。

### Suggested solution / 实现思路

_No response_

### Additional context / 附件

_No response_