Adding support for truth-label-based jet mass scale uncertainties

Some of the new large-R JMS uncertainties depend on the truth label, as they are only applicable for QCD-labelled jets (not W/Z/top/etc jets). This MR adds support for such truth-label-based uncertainties and also updates the validation plotting scripts for a few new types of validation plots (done as part of the large-R consolidated tagger SFs but not committed at the time). This latter part (MakeUncertaintyPlots.cxx and runMakeUncertaintyPlots.sh) is completely irrelevant for users, but is useful for other developers of the package who may need to validate new SF uncertainties in the future.

Tagging @cdelitzs and @mswiatlo for Jet/EtMiss Tagging @dmelini and @xingguo for the in situ subgroup