To harmonize the various CAM operations, the helical drill shall also be
configured using the cut mode (Climb/Conventional) just like Pocket or
FaceMill.
This means, the path direction (CW/CCW) is now a hidden read-only output
property, calculated from the side (Inside/OutSide) and the here newly
introduced cut mode.
The spindle direction is not yet taken into account and is always assumed
to be "Forward".
The GUI strings are kept compatible with what RP#14364 introduced becasue
of the v1.0 release string freeze. They need revision once back on the
main branch.