Resolve "Add true decaying particle info onto event display"

benchmarks/imaging_ecal/options/imaging_2dcluster.py

benchmarks/imaging_ecal/run_emcal_barrel.sh

benchmarks/imaging_ecal/run_imcal_pion0.sh

benchmarks/imaging_ecal/scripts/draw_cluster.py

benchmarks/imaging_ecal/scripts/utils.py