feat: support Windows or other OS

[xudaotutou]

When I use the command skeet s on Windows 11, I encountered the following error:
Error in server function: Error: Command failed: lsof -i :9099 | awk 'NR>1 {print $2}
Upon inspecting the source code, I found that the server directly uses the commands lsof and mkdir for implementation, which are missing in Windows's PowerShell.
I hope to use official Node.js modules as much as possible to achieve the functionality, rather than relying entirely on Bash shell implementation.