ENH : end og MetadataInterface refactoring + change IMI test

Code/IO/otbImage.h

Code/IO/otbImage.txx

Code/IO/otbImageMetadataInterfaceFactory.cxx

Code/IO/otbImageMetadataInterfaceFactory.h

Code/IO/otbVectorImage.h

Code/IO/otbVectorImage.txx

Code/Radiometry/otbImageToLuminanceImageFilter.h

Code/Radiometry/otbImageToReflectanceImageFilter.h

Code/Radiometry/otbLuminanceToReflectanceImageFilter.h

Code/Visualization/otbImageLayerGenerator.txx

Examples/Projections/VectorDataExtractROIExample.cxx

Testing/Code/IO/CMakeLists.txt

Testing/Code/IO/otbImageMetadataInterfaceTest.cxx

Testing/Code/IO/otbImageMetadataInterfaceTest2.cxx