Fix build with sfdk and qtcreator

It seems the %qmake_install macro is failing. The fix should be moving qmake .pro TEMPLATE to AUX, and add what should be installed explicitly by `INSTALLS+= `. The default TEMPLATE tries to build c++ binary given by TARGET

For some reason this doesn't work properly with sfos sdk, therefore I have updated spec file according to https://gitlab.com/whisperfish/whisperfish/-/blob/main/rpm/harbour-whisperfish.spec?ref_type=heads#L294 to skip the qmake at all.

In our settings we needed to disable make step (Projects -> build) and to configure name of binary to execute on remote device (Projects -> Run -> Executable on device -> /usr/bin/harbour-taak)