Allow to bridge between Camel DataFormat and Kafka Connect SMT

[oscerd]

It will be nice if we can somehow bridge between whetever we have for Camel DataFormat and bridge it as Kafka SMT (Single Message Transformation). However, my gut feelings is that, we might need to add an wrapper for each DataFormat we have, because some DataFormat (let's say Protobuf), may it needs some extra processing, for example for the header

author @omarsmak