Draft: TauTrig, adding HLT tau PrecisionMVA reconstruction tools scheduling using ComponentAccumulator

pinging @tbold, @martindl, @iriu, @gipezzul and @carquin

Main links for more information:

• https://indico.cern.ch/event/1134111/contributions/4760376/attachments/2402100/4108241/Tau_JobOptions_04032021.pdf
• https://gitlab.cern.ch/atlas/athena/-/blob/master/Reconstruction/tauRec/python/TauToolHolder.py

Note :

• can only check qualitatively running "test_trig_data_newJO_build.py" -> no error raising from this new added piece of code
• more quantitative/definitive checks will come after PrecisionTracking part will migrated to new job options