ENH: addition to API (user level, state, enrich Application API)

Code/Core/otbWrapperApplication.cxx

Code/Core/otbWrapperApplication.h

Code/Core/otbWrapperInputComplexImageParameter.h

Code/Core/otbWrapperInputImageParameter.h

Code/Core/otbWrapperInputVectorDataParameter.h

Code/Core/otbWrapperParameter.h

Example/Smoothing/otbSmoothing.cxx