Support for protobuf schemas

[martimors]

Is your feature request related to a problem? Please describe.
In a Microsoft environment, protobuf is generally preferred to Avro and JSON Schema. It would be nice to be able to use this client with protobuf schemas as well!

Describe the solution you'd like
Implement the existing interfaces using protobuf as has already been done for avro and json schema.

[marcosschroh]

Hi @dingobar

Thanks for requesting this feature. I have not experience at all with protobuf, I will read about it and try to come up with something. Would you like to work in this feature as well?