Handle JSON serialization & deserialization and JSON formatted generic error objects

[SouquieresAdam]

Problem

Many Kafka Streams users are more at easy using JSON instead of AVRO, I would like to be able to use KStreamplify as easily with JSON as it's easy to use with AVRO.

Suggestion

I would like to rename (or deprecate) SerdesUtils in favor of AvroSerdesUtils (since the library has no Major release yet !) and to create a JsonSerdesUtils to easily get a generic Serdes for Avro or JSON in the same transparent & generic way.

Alternatives Considered

A clear and concise description of any alternative solutions or features you've considered.

Additional Context

A pull request will follow.