The source project of this merge request has been removed.
Creating and saving ghost labels for PFlow jets
Adding the JetGhostLabel modifier to the standard AntiKt4EMPFlow jets, and making sure we save this info in FTAG derivations.
I am confused why we have similar PHYSVAL_FTAG1_FTAG2_ExtraVariables definitions in both FtagCommon.py and FtagBaseContent.py (introduced here !56780 (merged)) so have added the vars to both and fixed the formatting. If we don't need both I can remove one.