Prepare CERN tutorial exercises

[bartosik-hep]

Prepare the reference input and configuration files for each exercise in the corresponding repository using Gaudi syntax.

Basic exercises (1st day)

• particle-gun simulation
• H->bb simulation
• H->bb digitization
• BIB overlay and suppression
• jet reconstruction

Advanced exercises (2nd day)

• preparing a lightweight BIB file for VXD optimisation studies
• modifying VXD geometry and verifying the effect on occupancy
  • how to visualize the geometry
  • how to check for overlaps, material budget
• modifying an existing Marlin processor
• creating a new Marlin processor