Create feedservice skeleton

[pjeziorowski]

Requirements

• generate app using https://start.vertx.io/
• use:
  • groupid: io.appwish
  • artifact id: feedservice
  • gradle
  • dependencies: vertx-postgres, vertx-grpc, vertx-config

Alternatively, if you choose Javascript you can use https://reactiverse.io/es4x/ instead