Improve cue/monitoring and click/metronome listening

[tommy_8729]

I suggest enhancing the cue/monitoring and click/metronome listening features.

They are still very basic and haven’t seen improvements across several versions.
Having a dedicated track for cue/monitoring would be useful, along with its own routing options.

The same applies to the click.
There is only the metronome, and aside from turning it on and off, there’s not much else you can do.
Assigning it its own track and routing would be excellent.