Add GCP managed Kafka plugin

[rupurt]

Howdy 👋

Are there any plans to add a plugin for GCP Managed Kafka similar to the AWS & Azure plugins?

[d-rk]

Hey @rupurt
As we are not working with google cloud currently, we will probably not implement such a plugin in the near future.
Implenting it it however is not that complicated, since you basically only need to fetch a token.
If someone opens a PR for this I'm happy to review it.

Cheers, Dirk