DOC: missing doxygen

Code/Wrappers/QtWidget/otbQtFileSelectionWidget.h

Code/Wrappers/QtWidget/otbQtLogOutput.h

Code/Wrappers/QtWidget/otbQtStringSelectionWidget.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetChoiceParameter.h

...s/QtWidget/otbWrapperQtWidgetComplexInputImageParameter.h

.../QtWidget/otbWrapperQtWidgetComplexOutputImageParameter.h

.../Wrappers/QtWidget/otbWrapperQtWidgetDirectoryParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetEmptyParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetFloatParameter.h

...s/QtWidget/otbWrapperQtWidgetInputFilenameListParameter.h

...ppers/QtWidget/otbWrapperQtWidgetInputFilenameParameter.h

...pers/QtWidget/otbWrapperQtWidgetInputImageListParameter.h

...Wrappers/QtWidget/otbWrapperQtWidgetInputImageParameter.h

...ers/QtWidget/otbWrapperQtWidgetInputProcessXMLParameter.h

...QtWidget/otbWrapperQtWidgetInputVectorDataListParameter.h

...ers/QtWidget/otbWrapperQtWidgetInputVectorDataParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetIntParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetListViewParameter.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetModel.h

...pers/QtWidget/otbWrapperQtWidgetOutputFilenameParameter.h