Pan the click sound to the Left or Right output only

It would be great if I clould pan the click sound to the left or the right as I currently switch between an app to run backing tracks and the click is only on the left side. So in turn the sound man sometimes forgets to mute or unmute the right side, missing the start of a track or having the click come through FOH

Changed the title from "Pan the click sound to the Left or Right output only" to "App: Pan the click sound to the Left or Right output only"

Merged "A very useful new feature" #567

Merged "Metronome panning" #593

Merged "put PAM control" #609

Merged "Add option R/L" #884

Merged "Click L or R" #871

Merged "Poder enviar salida monofonica" #1010

Merged "balance of the sound" #1036

We need this