PMGSystematicsTools add to master, Prophecy4fControl update to changes in 21.6

Generators/PMGSystematicsTools/.gitlab-ci.yml

Generators/PMGSystematicsTools/CMakeLists.txt

Generators/PMGSystematicsTools/README.md

Generators/PMGSystematicsTools/cmt/requirements

Generators/PMGSystematicsTools/data/DSID_Database.yaml

...tors/PMGSystematicsTools/data/ExclusivePlusInclusive.plot

Generators/PMGSystematicsTools/data/MC_TTbar_TruthSel.plot

Generators/PMGSystematicsTools/data/MadGraph_samples.txt

Generators/PMGSystematicsTools/data/PMGxsecDB_manual.txt

Generators/PMGSystematicsTools/data/Powheg_samples.txt

Generators/PMGSystematicsTools/data/RivetAnalysis_JO.py

...s/PMGSystematicsTools/data/RivetAnalysis_JO_MEfromFile.py

...ators/PMGSystematicsTools/data/RivetAnalysis_JO_Rivet3.py

...PMGSystematicsTools/data/RivetAnalysis_JO_Rivet3noSyst.py

...ators/PMGSystematicsTools/data/RivetAnalysis_JO_noSyst.py

Generators/PMGSystematicsTools/data/Sherpa_samples.txt

Generators/PMGSystematicsTools/data/Syst_Database.yaml

Generators/PMGSystematicsTools/data/dataMCComparison.tex

Generators/PMGSystematicsTools/data/end.tex

Generators/PMGSystematicsTools/data/errorAnalysis.tex