Quick switching between stereo and mono

[MetalDroid]

Is your feature request related to a problem? Please describe. No.

Describe the solution you'd like I would like a switch in the menu to alternate between stereo and mono.

Describe alternatives you've considered I currently use the developer settings to switch between mono and stereo. It would be faster to use the app menu.

Additional context I occasionally use only one earbud instead of two, so the switch between mono and stereo would allow me to hear all sounds when I use only one earbud (or for some other reason).