Adding new categories for Tau trigger online monitoring

This MR will add the following categories for Tau trigger online monitoring:

• TrigTauRecMerged_TauCaloOnlyMVA
• TrigTauRecMerged_TauPreselection_Track
• TrigTauRecMerged_TauPreselection_TrackTwo
• TrigTauRecMerged_TauPrecisionMVA
• TrigTauRecMerged_TauPrecision_Id
• TrigTauRecMerged_TauPrecision_Track
• TrigTauRecMerged_TauPrecision_TrackTwo
• TrigTauRecMerged_TauPrecisionMVAEF

with the same monitoring histograms as the current "TrigTauRecMerged_TauCaloOnly" category

pinging @malconad and @wangxi