Add a way to check creation and rebalancing of Kafka topics

[fedinskiy]

In the KafkaGratefulShutdownIT[1] we create topics and then sleep for a second until they are ready to accept messages. Recommended solution from Quarkus team[2] is to "access the underlying Kafka client and write a check on that" or "to write a custom consumer rebalance listener to listen rebalance events". We should implement one of these

[1]

quarkus-test-suite/messaging/kafka-streams-reactive-messaging/src/test/java/io/quarkus/ts/messaging/kafka/reactive/streams/KafkaGratefulShutdownIT.java

Line 48 in f4aefae

* for details and todo see https://github.com/quarkusio/quarkus/issues/41441

[2] quarkusio/quarkus#41441 (comment)