tauRecTools: deploy R22 track classifier
This MR is deploying the RNN tau track classifier tune for the R22 reprocessing. It was derived on Round 2.5 MC preproduction (ATLTAU-1738). There are minor changes in variable definitions or names compared to the previous tune (Round 1.5). We are still scrutinising some trainings that are just becoming available, so this json file is a baseline, which we might want to update in the next hour if a newer one if found to be better.
Adding the urgent flag as we will need this for the R22 reprocessing.