moved generate_cloud into tile_composer module and changed its interface
moved generate_cloud into tile_composer module and changed its interface

dyoussef/s2p,MISS3D/s2p,jmichel-otb/s2p,jmichel-otb/s2p,carlodef/s2p,dyoussef/s2p,MISS3D/s2p,MISS3D/s2p,dyoussef/s2p,jmichel-otb/s2p,mnhrdt/s2p,MISS3D/s2p,dyoussef/s2p,carlodef/s2p,mnhrdt/s2p,jmichel-otb/s2p