Draft: Track eff monitoring

Analysis task for dimuon tracking efficiencies to be added.

There are a few issues/open questions: When testing, I also created MonRegistrarTrackEff.py with just the run() definition (MonitoringJob() initialization). Is this also required or is it enough to have this in the 'main' analysis task python script?

Looking at updated twiki at https://twiki.cern.ch/twiki/bin/view/LHCb/Hlt2AnalysisTasks#Running_an_Analysis_Task_in_Prod it is required to add two other scripts to set it running, should I also create them?

Last thing is the monitoring of shared stages. I have opened an issue here regarding this problem. Main issue is that we have to use shared stages which results in the same output in monitoring for our tagged and match muons. The efficiency is matched/tagged, so without monitoring both stages separately, our efficiency is always 1.