Toggle macOS menu bar from you know where

from blog lmno.lol @alvaro, | ↗ original
I'm a fan of macOS's auto-hide menu bar setting. Unless I'm reaching out to a menu item, I don't typically need to have a visible menu bar, so I set auto-hide to "Always". On rare occasions, I turn this setting off (say for a screen grab). While reaching out to macOS Control Center is OK, I wanted to quickly toggle it from the comfort of Emacs...