This merge request does:
- update tauRecTools internal lwtnn package to support bidirectional RNNs
- update track classifier to adopt new variable input and output names
- update tauRec flags to use new training config from cvmfs group space
The tauRecTools own implementation of lwtnn is discussed and approved in this MR !26712 (merged).
Note: The MR removes Internal State Forwarding (ISF) from tauRecTools own lwtnn implementation and replaces it with BRNN capabilities.