Configure hypo for calo iso
This MR is to follow on ATR-20756 implementing a cut on Calorimeter isolation variables for isolated photon chains. It includes:
- update configuration of the PReicisionPhotonHypo
- Added few variables to monitor (will need to add more in future)
- Added required icalo[whatever] chainparts in SignatureDicts
- Also fixed the way to define chainsteps in PhotonDef as done in ElectonDef : from defining the sequence to defining the name of steps and then use self.getattr(thename)
ART tests ran locally
Pinging @catrin, @aranzazu, @cjmeyer, @dbakshig
Fer