[Task] Transformer-session-based End2End Example with Merlin Models and Merlin Systems

[bschifferer]

Description

Use Case Number #2 in NVIDIA-Merlin/models#734 and see https://docs.google.com/document/d/1Zi0SNHHiN72wYIwpkKx-u5xqC35YvlZjNTKUosRuQds/edit

[viswa-nvidia]

End 2 End functionality not there in 22.11. Serving (list columns) is not available.