Example client: Rename Stream() to Consume() to avoid confusion with RabbitMQ streams

[andygrunwald]

The example client names its functionality to consume messages from a queue Stream().
With one of the latest versions of RabbitMQ, RabbitMQ Streams have been introduced.

From what I can see, the API is also using Consume, but requires custom arguments like x-queue-type. In the example client, these arguments are not used so far.

To avoid confusion between "simple" consuming and the new Streaming functionality, this PR renames Stream() to Consume().

[Zerpet]

Happy to merge this once the merge conflicts are resolved.

[andygrunwald]

@Zerpet Fixed

[Zerpet]

Thank you!