Move the GeoModelVisualization content to its new subdirectory

GeoModelVisualization/VP1Base/src/IVP12DDetViewsSystem.cxx

...Visualization/VP1Base/src/IVP12DStandardChannelWidget.cxx

GeoModelVisualization/VP1Base/src/IVP12DSystem.cxx

GeoModelVisualization/VP1Base/src/IVP12DSystemSimple.cxx

...delVisualization/VP1Base/src/IVP12DViewTransformation.cxx

GeoModelVisualization/VP1Base/src/IVP13DChannelWidget.cxx

...Visualization/VP1Base/src/IVP13DStandardChannelWidget.cxx

GeoModelVisualization/VP1Base/src/IVP13DSystem.cxx

GeoModelVisualization/VP1Base/src/IVP13DSystemSimple.cxx

GeoModelVisualization/VP1Base/src/IVP1ChannelWidget.cxx

GeoModelVisualization/VP1Base/src/IVP1System.cxx

GeoModelVisualization/VP1Base/src/PhiSectionWidget.cxx

GeoModelVisualization/VP1Base/src/SoCooperativeSelection.cxx

GeoModelVisualization/VP1Base/src/VP12DExaminerViewer.cxx

...zation/VP1Base/src/VP12DViewRPhiFishEyeTransformation.cxx

...lization/VP1Base/src/VP12DViewRZFishEyeTransformation.cxx

GeoModelVisualization/VP1Base/src/VP1AthenaPtrs.cxx

GeoModelVisualization/VP1Base/src/VP1CameraHelper.cxx

GeoModelVisualization/VP1Base/src/VP1Collection.cxx

...alization/VP1Base/src/VP1CollectionSettingsButtonBase.cxx