[Trlog] Incremental tuning from keyboard

[VE5ZX]

In the TR manual it indicates that left & right shift keys can be used to
incremental change the RIT for Kenwood and Yaesu rigs.

Tree, would it be possible to have TR log use these keys to incrementally
tuning an Icom transceiver (or any other rig that allows direct frequency
from the call window) so that the transceiver frequency is increased or
decreased by an increment value that is set in the configuration file? This
would allow the op to incrementally change the transceiver freq without
having to move his hands from the keyboard.

tnx

Sylvan Katz - VE5ZX
Saskatoon, SK