Docs: add page dedicated to working with Kafka

[dreamorosi]

What were you searching in the docs?

As part of #4057 we're adding a new utility dedicated to Kafka consumers, we should add a doc page for the new feature, complete with code snippets.

Is this related to an existing documentation section?

No response

How can we improve?

N/A

Got a suggestion in mind?

No response

Acknowledgment

• [x] I understand the final update might be different from my proposed suggestion, or refused.