Implement detector benchmark for the barrel calorimeter for energy resolution

benchmarks/barrel_ecal/config.yml

@@ -17,6 +17,12 @@ bench:emcal_barrel_pions:
     - ["sim:emcal_barrel_pions"]
   script:
     - root -b -q benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx+
+    - ls -lrht sim_output
+  artifacts:
+    expire_in: 1 day
+    paths:
+      - sim_output/sim_emcal_barrel_uniform_electrons.root
+
 
 bench:emcal_barrel_electrons:
   extends: .det_benchmark