[scan136] unify GUI code for scanning instruments ()

GUI/Model/Device/InstrumentItems.cpp

GUI/Model/Device/InstrumentItems.h

GUI/Model/Device/PointwiseAxisItem.cpp

GUI/Model/Device/SourceItems.cpp

GUI/Model/Device/SourceItems.h

GUI/Model/FromCore/ItemizeSimulation.cpp

GUI/Model/Project/LinkInstrumentManager.cpp

GUI/Model/Project/ProjectDocument.cpp

GUI/Model/Project/ProjectDocument.h

GUI/View/Import/RealDataPropertiesWidget.cpp

GUI/View/Instrument/DepthprobeInstrumentEditor.cpp

GUI/View/Instrument/GISASBeamEditor.cpp

GUI/View/Instrument/InstrumentLibraryEditor.cpp

GUI/View/Instrument/InstrumentListView.cpp

GUI/View/Instrument/InstrumentView.cpp

GUI/View/Instrument/OffspecBeamEditor.cpp

GUI/View/Instrument/OffspecBeamEditor.h

GUI/View/Instrument/OffspecInstrumentEditor.cpp

GUI/View/Instrument/OffspecInstrumentEditor.h

GUI/View/Instrument/ScanEditor.cpp