Support of Avro and Schema Registry

[wernerdaehn]

The majority of the Kafka use cases generate data in Avro format. Because it is a schema validated, binary format for Json data.

[loicalleyne]

Protobuf over Kafka is also very widespread.

[rotem-ad]

+1 on this. Native Avro and Schema Registry support would make this extension incredibly powerful.

[rustyconover]

I agree!