Switched forward ECAL to a homogenous approximation

.gitlab-ci.yml

compact/ce_ecal.xml

compact/ci_ecal.xml

compact/ecal.xml

compact/ecal_backward_crystal_glass.xml

compact/ecal_backward_hybrid.xml

compact/ecal_forward_homogenous.xml

compact/ecal_forward_scfi.xml

compact/ecal_forward_shashlik.xml

compact/materials.xml

compact/subsystem_views/calorimeters.xml

src/ScFiCalorimeter_geo.cpp