feat: rename EcalBarrelHits to EcalBarrelImagingHits

.gitlab-ci.yml

benchmarks/clustering/options/full_cal_reco.py

benchmarks/ecal/options/barrel.py

benchmarks/imaging_ecal/config.yml

benchmarks/imaging_ecal/options/hybrid_cluster.py

benchmarks/imaging_ecal/options/imaging_2dcluster.py

benchmarks/imaging_ecal/options/imaging_topocluster.py

benchmarks/imaging_ecal/options/scfi_cluster.py

benchmarks/imaging_shower_ML/options/imaging_ml_data.py