Adding pre-selections for single and multi-jet PFlow chains and corresponding EMTopo chains to LS2_v1
As discussed in ATR-23547, this MR adds 3 different pre-selections (loose,medium and tight) for many different single and multi-jet PFlow chains. In addition, for each pre-selection we also add a subjesIS topocluster-based chain to evaluate the effect of the preselection on rates before the PFlow reconstruction is made.
FYI: @khoo
Edited by Marco Valente