Add an option to transpose multisample keybed ranges during auto pitch detection

Phoebus1966

Example where this is needed:

OSC1=multisample of vibraphone (done via pitch detection)
OSC2=multisample of same vibraphone however shifted 1 octave higher on the keybed (currently not possible via pitch detection)

Currently it is not possible to transpose multisamples in the sense of shifting the assigned key ranges and transpose of these ranges via one parameter. Pitch detection and determination of ranges and their transpose value is fixed and there is no way to change that.

Note: Transposing via vertical scroll knob has no effect on incoming midi notes.