ADD: Formosat-2 metadata reading and sensor model

Code/IO/otbFormosatImageMetadataInterface.cxx

Code/IO/otbFormosatImageMetadataInterface.h

Code/IO/otbFormosatImageMetadataInterfaceFactory.cxx

Code/IO/otbFormosatImageMetadataInterfaceFactory.h

Code/IO/otbImageMetadataInterfaceFactory.cxx

...s/otbossimplugins/ossim/ossimFormosatDimapSupportData.cpp

...ies/otbossimplugins/ossim/ossimFormosatDimapSupportData.h

Utilities/otbossimplugins/ossim/ossimFormosatModel.cpp

Utilities/otbossimplugins/ossim/ossimFormosatModel.h

...es/otbossimplugins/ossim/ossimPluginProjectionFactory.cpp