feat: add rename-workspace command

[mzhu-zx]

It seems that there isn't a command to rename workspace yet... So, this commit adds a simple command rename-workspace.

Usage:

• Using GlazeWM's term:
  • rename-workspace --name 1 --display-name hello
  • rename-workspace --name 1: rename to "1" without a display name
  • rename-workspace --display-name hello: set the display name to "hello"
• It also supports a simpler i3-ish way to rename:
  • rename-workspace 1:hello == rename-workspace --name 1 --display-name hello
  • rename-workspace 1 == rename-workspace --name 1
• To rename another workspace that isn't focused, specify the workspace by its name:
  rename-workspace --workspace 1 1:hello
• Since a name doesn't need to be a number, the following are valid

  rename-workspace hello:world
  rename-workspace --workspace hello 2:hello-world
  

Related: #776

[SimpsonGSD]

This would be great to have!

[lars-berger]

Thanks for working on this! 💜 I have a couple of suggestions to consider:

• Instead of rename-workspace, what do you think about making this a more general update-workspace-config command? This would let us modify other workspace options (like keep_alive) without needing separate commands for each property. Your structure with the clap args looks really nice, we could keep it the exact same way and just add extra optional args for the other properties:

  update-workspace-config --name <name> --display-name <display-name> --keep-alive <bool> ... --workspace <name>
  

• a bit of a nitpick, but I reckon requiring explicit --name and --display-name args is a bit clearer than also allowing the shorthand version, especially with the proposed update-workspace-config change.