AFT-673 save GN2v01 b-tagger outputs on Jet in PHYS
The FTAG group is planning to drop the BTagging object for the next b-tagger.
To get the machineries ready, this is now being tested on PFlow jets for the GN2v01 tagger. This MR adds an alg that runs b-tagging on PFlow jets in PHYS and save the GN2v01 outputs as jet attributes.
Note that we are not modifying BTagging object, this MR should not change any existing variables in PHYS. But this MR will break the frozen derivation test since we are adding additional variables (GN2v01_*) to PFlow jet collection.