Add support for client-managed 2024-Nov

[mountaindude]

This version of QSEoW adds some new security features when communicating with the engine.
More info here.

In short, before any interaction with the engine a token has to be retrieved.
This is not difficult per se, but does require some work.

For example, we should still support older QSEoW versions that do not have the endpoint from which to retrieve the token.
The changes must thus be resilient to this and gracefully handle also the scenario where that endpoint is not present.