Improve how to control QC: MIDI and switches

[legzalez]

We already have this request, which addresses this issue!

Feat. Request: Make Hybrid Mode more like “Command center” on Helix

Instead of having the top row just for stomps and the bottom row for scenes (as the soon to be updated hybrid mode), it would be better if we could assign any of the foot switches to any function (pedal, scene or preset) as you currently can on the Line-6 helix eco-system using their awesome Command-Center.