Add release-validation workflow

[bartosik-hep]

Create a script that runs a full detector simulation cycle producing relevant outputs for validation of a software release.

• test the MARS15 -> LCIO conversion script
  • generate a file with MCParticles from a small subset of MARS15 sample
  • plot basic properties of the resulting BIB particles: [energy, position, time] vs pdgId
• validate the GEANT4 and BIB overlay code
  • simulate a muon gun event with overlaid BIB particles in the baseline detector geometry
  • plot basic properties of the SimHits: position, time, energy, multiplicity vs layer.
• validate digitization code
  • run digitization of the simulated hits
  • plot basic properties of the RecHits: time, energy, multiplicity vs layer