ENH; add event classes + start progress in Qt

CMake/WrapperMacros.cmake

Code/CMakeLists.txt

Code/Common/CMakeLists.txt

Code/Common/foo.cxx

Code/Common/otbWrapperEvent.h

Code/Common/otbWrapperEventsListener.h

Code/Common/otbWrapperEventsSender.h

Code/Core/CMakeLists.txt

Code/Core/otbWrapperApplication.cxx

Code/Core/otbWrapperApplication.h

Code/Core/otbWrapperOutputImageParameter.h

Code/Wrappers/CMakeLists.txt

Code/Wrappers/QtWidget/CMakeLists.txt

Code/Wrappers/QtWidget/otbWrapperQtWidgetModel.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetModel.h

Code/Wrappers/QtWidget/otbWrapperQtWidgetView.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetView.h

Example/CMakeLists.txt

Example/otbRescale.cxx

Testing/CMakeLists.txt