Microphone mute hotkey on macOS.md

1. Open Automator.app
2. Create new Quick Action
3. Select Run AppleScript
4. Add this:

set inputVolume to input volume of (get volume settings)
if inputVolume = 0 then
	set inputVolume to 100
	display notification "Volume set to 100" with title "✅ Microphone is on"
else
	set inputVolume to 0
	display notification "Volume set to 0" with title "❌ Microphone is off"
end if
set volume input volume inputVolume

5. Save as mute-microphone
6. Go to System Preferences -> Keyboard -> Shortcuts -> Services -> General
7. Find the mute-microphone service and set the hotkey (e.g. control-cmd-option M)