新增命令lsscsi

**新增命令**

`lsscsi` 含义：查看SCSI/SATA硬盘连接情况

`[0.0.0.0]` 四个数字依次为：

- 控制器号
- 通道号
- 硬盘编号
- 卷编号

Start by locating the repository’s command-documentation entry point and reviewing how existing command pages record names and descriptions. Add an lsscsi entry explaining SCSI/SATA disk connections and the four [0.0.0.0] fields; done when it matches the project’s existing format.

Written by the indexing model from the issue text.