Description

The idea would be to industrialize the support of Kafka Streams interactive queries when "querying remote state stores for the entire app".

This was discussed in quarkusio/quarkus-quickstarts#578 , as the quickstart demonstrates interactive queries, but it's not very test-friendly and requires some boilerplate config.

Implementation ideas

It looks like the extension could pre-configure quarkus.kafka-streams.application-server to ${hostname}:${quarkus.http.port}, if a quarkus http extension ("RPC endpoint") is also present.

Relying on the presence of a HOSTNAME env variable is not cross-platform, so it might be necessary to determine it programmatically via Java INetAddress APIs (similar to