[Kafka] Allow Json consume to natively read AVRO Message

Context

For my organization project, i needed to produce and consume AVRO messages from the Schema Registry so i develop a custom KakfaClient to produce the AVRO message.

Concerning the consumption, i detected after a debugging phase that the actual KafkaReceiver is almost able to treat an incoming AVRO message format thanks to the readJson method

Here is the actual implementation

            ConsumerJsonRecord jsonRecord = new ConsumerJsonRecord(thisRecord.key(), null, valueNode, headersMap);

Here is the code which allow parsing AVRO record

            jsonRecords.add(new ConsumerJsonRecord(keyNode, null, valueNode, headersMap));

with keyNode

            JsonNode keyNode = objectMapper.readTree(key.toString());

I can do a PR if this issue is accepted

[nirmalchandra]

Thanks @M3lkior. This looks great. Yes please, please go ahead with the PR and assign the following folks as reviewers please. @sparrowV , @respondsid , @dandalavinod, @ddingel, @santhoshTpixler

Will assign additional reviewers if needed.

[authorjapps]

Released. Available in v 1.3.28