ENH: finalize Smoothing example

Code/Core/otbWrapperApplication.cxx

Code/Core/otbWrapperApplication.h

Code/Core/otbWrapperChoiceParameter.h

Code/Core/otbWrapperInputImageParameter.h

Code/Core/otbWrapperOutputImageParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetChoiceParameter.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetChoiceParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetEmptyParameter.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetEmptyParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetFloatParameter.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetFloatParameter.h

...appers/QtWidget/otbWrapperQtWidgetInputImageParameter.cxx

...Wrappers/QtWidget/otbWrapperQtWidgetInputImageParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetIntParameter.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetIntParameter.h

...ppers/QtWidget/otbWrapperQtWidgetOutputImageParameter.cxx

...rappers/QtWidget/otbWrapperQtWidgetOutputImageParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetParameterBase.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetParameterBase.h

.../Wrappers/QtWidget/otbWrapperQtWidgetParameterFactory.cxx