Generate jackson type id resolver

[gdhordain]

Linked to issue #626.

Current status:

• generate annotation
• generate java resolver
• generate kotlin resolver
• generate scala resolver
• plug with gradle plugin
• plug with maven plugin
• plug with sbt plugin

[kobylynskyi]

@jxnu-liguobin could you please contribute kotlin and scala + sbt-related changes?
Thanks!

[jxnu-liguobin]

@kobylynskyi @gdhordain
Because both union and interface are required __typename, Also need generat jackson type id for interface.

Of course, the PR can choose to solve only union. But I think it's a similar problem. It's better to solve it together as much as possible.

[jxnu-liguobin]

@jxnu-liguobin could you please contribute kotlin and scala + sbt-related changes?
Thanks!

Yes, But It will take some time.

Please take a look. I've finished all the work in https://github.com/MOOM-Planet/graphql-java-codegen/pull/1/files

In order to complete PR faster, the annotation on the interface has not been solved for the time being.

Of course, the PR can choose to solve only union. But I think it's a similar problem. It's better to solve it together as much as possible.

[jxnu-liguobin]

Looks Good. 👍

[kobylynskyi]

@gdhordain Looks great. Thanks!