Could you please add the method to install rustscan using x-cmd in the README.md?

- Hi, [x-cmd](https://www.x-cmd.com/) is a **toolbox for Posix Shell**, offering a lightweight package manager built using shell and awk.. It helps you download rustscan release packages from the internet and extract them into a unified directory for management, without requiring root permissions.

- **I mean, can the installation method provided by x-cmd be added to the rustscan README.md?**[The installation method for the x command](https://www.x-cmd.com/start/).
```sh
x env use rustscan
```

- By the way, we wrote a [rustscan introduction article and a demo](https://www.x-cmd.com/pkg/rustscan)