Opentelemetry instrumentation for google pubsub.

[OmarEltamasehy]

Hi,
I hope all are doing well,
Appreciate your support for providing me with docs or link to do cloud pubsub tracing if opentelemetry instrumentation pubsub already supported from your side.

Thanks in advance.

[codeboten]

Maybe @aabmass can chime in here, is this something that's already supported?

[codeboten]

Looks like there's an open issue here @OmarEltamasehy googleapis/python-pubsub#124