Add custom trace attributes to query session

[mduggan-starburst]

In order to help isolate and analyze query behavior from specific clients, there should be custom trace attributes that can be added to query Session objects. This would allow for adding these additional tracing attributes to QueryMonitor logging and OptenTelemetry Trace objects.

[findepi]

Trino CLI has these options

...
      --client-info=<info>   Extra information about client making query
      --client-tags=<tags>   Client tags
...

can any of these be used for the purpose?

[mduggan-starburst]

Trino CLI has these options

...
      --client-info=<info>   Extra information about client making query
      --client-tags=<tags>   Client tags
...

can any of these be used for the purpose?

Certainly for the client tags. I'll look into the client info.