Update/Cleanup of the TrigTauHypo package and configuration

This MR addresses the cleanup/documentation of the TrigTauHypo package, in preparation for the HLT GNTau implementation. This is part of a series of MRs that will be undrafted sequentially.

No HLT Tau Triggers will be used in the low-mu pp or HI data-taking runs, so we can open these MRs now, which are needed before we start validating the new HLT GNTau.

Amongst the most important changes, we can list:

• Updated all names for the Hypothesis algs. and tools to the Run 3 naming conventions:
  • TrigTauGenericHypo -> TrigTauCaloHypoTool
  • TrigTrackPreSelHypoAlg -> TrigTauFastTrackHypoAlg
  • TrigTrackPreSelHypoTool -> TrigTauFastTrackHypoTool
  • TrigTrkPrecHypoAlg -> TrigTauPrecTrackHypoAlg
  • TrigTrkPrecHypoTool -> TrigTauPrecTrackHypoTool
  • TrigEFTauMVHypoAlg -> TrigTauPrecisionHypoAlg
  • TrigEFTauMVHypoTool -> TrigTauPrecisionIDHypoTool
  • TrigEFTauDiKaonHypoTool -> TrigTauPrecisionDiKaonHypoTool
• Removed lots of unused skeleton code in the hypo algs/tools, from previous versions. This is a much better clean slate for the soon-to-come changes (3-step tracking, preselections, etc...)
• Removed hard-coded HypoTool configurations for the standard Tau trigger chains using TrigTauPrecisionIDHypoTool
• Added support for monitoring multiple TauId scores for (id)perf chains in the TrigTauPrecisionIDHypoTool
• Updated online monitoring histogram and variable descriptions:
  • The histograms' names have been overridden to be the same as in the current Athena release to allow for an HLT Reprocessing validation round with complete reference comparisons.
  • After the changes are validated, we'll update the histogram names.
• General code linting.

The changes were validated by comparing event counts and online/offline monitoring histograms for 10k mc23e ttbar/g*tautau/Ztautau events.