Add monitoring to the OBP -> CBS Kafka queue

[simonredfern]

Add monitoring to the OBP -> Core Banking System Kafka queue

1. Monitor which OBP API requests are being answered
   (this would help integrators tick off a list of things to do)

2. Montior wait time etc.

I guess there are various tools which might help with the performance side at least. Which ever tool(s) should probably find their way into the docker image: https://hub.docker.com/r/openbankproject/obp-full-kafka/

[znurgl]

I'm working on it.