Add `save-quit` and `save-quit-all` commands

[NNBnh]

I surprise that there is no way to save and quit at with one command like wq on Vim, Kakoune or Helix when this is a very commonly used operation:

---

save-quit

Saves buffer to file then quits this client. If <path> is present, it will use that path so save the buffer's content, making it the new buffer's associated filepath (it will also enable saving for that buffer from now on).

• usage: save-quit [<path>]
• default alias: sq

save-quit-all

Saves all buffers to file then quits all clients.

• usage: save-quit-all
• default alias: sqa

---

These commands will be very convenient but I could see why this command doesn't exist in the first place, it's a bit redundant and seem like something the user could config to achieve...:

• Creates a keyboard mapping.
• Defind alias (currently not support).

If you find this suggestion it's suitable to be built-in with the editor, feel free to label this issue with "Plugin" or "Plugin Idea".

[vamolessa]

This could be accomplished by adding these to your config file:

command save-quit @{
    save @arg(*)
    quit@arg(!)
}
command sq @{ save-quit@arg(!) @arg(*) }
command save-quit-all @{
    save-all
    quit@arg(!)
}
command sqa @{ save-quit-all@arg(!) @arg(*) }

I'll add this to the config recipes page!

[NNBnh]

Thanks! I somehow missed that user can create custom commands...