Tutorials: Correlation IDs

### What?

Come up with an idea of a tutorial with the purpose of explaining correlation IDs and how to define them using AsyncAPI.

Ideally, there should be some working code at the end of the tutorial so people can see the value of both, having correlation IDs and having them defined on AsyncAPI.

### Why?
To introduce the "correlation IDs" feature and its purpose.

The issue names no files, tests, or entry points to start from. First locate the website's tutorial or documentation structure, then define the tutorial scope around correlation IDs and AsyncAPI; done means it explains their purpose and includes working code demonstrating the value of both.

Written by the indexing model from the issue text.