Figure out serial representations of Engine Models

[kyprifog]

I want a way for engine models to be serialized and passed between various programming languages (python -> scala for example) or libraries without having to depend on transpiling (like Jython).

Something like an avro or protobuf representation with client interpreters in each language.

python->python is easy (just libs with pypi), but handicaps the ability to scale beyond python ecosystem later on.

[kyprifog]

In particular, this is important for job serialization . Right now things like credentials, table_name, etc are serialized and validated a second time in mason-spark which is not very graceful: https://github.com/samtecspg/mason-spark/blob/master/src/main/scala/configs/MergeConfig.scala