This MR sweeps the following individual merge requests from main to 24.0, for the HLT GNTau implementation (ATR-30086):
main
24.0
Only changes in the tauRec and tauRecTools packages are included.
tauRec
tauRecTools
If anyone has any suggestions on doing this differently, please comment!
Tagging @ademaria, @martindl, @ntamir.
Small GNTau update
