OSC 99 style desktop notifications

[pluiedev]

Discussed in #4405

^{Originally posted by ehamiter January 2, 2025}
Coming from kitty, there's a nice way to implement desktop notifications, e.g.

printf '\x1b]99;;foo has been updated\x1b\\'

This makes it easy to add notifications to scripts, processes, etc. More info on how kitty implements it here:

https://sw.kovidgoyal.net/kitty/desktop-notifications/

Just curious if this would be something easy to implement or not.

Thank you!