ENH: invert bool return philosophy (true if OK)

Code/ApplicationEngine/otbWrapperApplication.cxx

Code/ApplicationEngine/otbWrapperInputImageListParameter.cxx

Code/ApplicationEngine/otbWrapperInputImageParameter.cxx

...licationEngine/otbWrapperInputVectorDataListParameter.cxx

.../ApplicationEngine/otbWrapperInputVectorDataParameter.cxx

...rappers/CommandLine/otbApplicationLauncherCommandLine.cxx

Code/Wrappers/CommandLine/otbWrapperCommandLineLauncher.cxx

...rs/QtWidget/otbWrapperQtWidgetInputImageListParameter.cxx

...appers/QtWidget/otbWrapperQtWidgetInputImageParameter.cxx

...Widget/otbWrapperQtWidgetInputVectorDataListParameter.cxx

...s/QtWidget/otbWrapperQtWidgetInputVectorDataParameter.cxx

...appers/CommandLine/otbWrapperCommandLineLauncherTests.cxx