Allowing private-plugins superproject

-Add cmake modules to CMAKE_MODUL_PATH in medInria-superProjectConfig.cmake.
-Force the build of ITK with ITK_USE_CONCEPT_CHECKING to OFF.
-Rename the main project medInria-full to medInria-superProject.
-Use PROJECT_NAME to build XXXConfig.cmake in cmake modules so it can be used  in private superProject