Put together Either serialization and serialization in server/client

[calippo]

In wiro we are forcing responses to have type Future[Either[_, _]]. While Future is automagically handled by autowire, Either is not. This information is lost on the wire (i.e. http/s). Serialization/Deserialization modules are currently splitted and confusing.

requirements

• Put together Either serialization and serialization in server/client

specs

{optional: describe technical specs to implement this feature, if not obvious}

misc

{optional: other useful info}