Protobuf serialization

[vbfox]

Need to be investigated and to work well with protobuf-net.

[vbfox]

Wow this seem to work out of the box, as the ID types follow the same pattern as expected by the auto-tuple and Record features (a constructor with all the fields) it work directly.

👍

[vbfox]

Reopened as default(Id) when the underlying type is a reference type doesn't work.

There need to be an option to generate protobuf-serializable types

ProtobufnetSerializable: true