re-order input and output channels

It would be nice, when the band say “oh btw I’ve bought this third keyboard”, to be able to insert into the input channel list in a sensible place rather than tagging on the end and just reordering in the surface… full input channel copy/paste and insert would be nice.

Also similarly, for the output busses, id like to remove a few of my groups to add some auxs. At present, the software deletes from the highest numbered busses only, so it would be great if I could make my unused busses move to the higher numbered slots without having to manually replicate them lower down the list prior to the re-configuring of the bus architecture.