add HLT tau an HLT tau tracks collections to TRIG9 derivations
This MR is adding two collections 'HLT_TrigTauRecMerged_MVA','HLT_tautrack_MVA' to the TRIG9.
These will let us study the HLT tau trigger quantities.
Tested on a modified version of https://gitlab.cern.ch/atlas/athena/-/blob/main/PhysicsAnalysis/DerivationFramework/DerivationFrameworkART/DerivationFrameworkPHYS/test/test_mc23PHYS.sh
Edited by Antonio De Maria