* Enhance go api server with interfaces router binding and services
Enhance the default go api server generation to define interfaces for an API's routes and services. Handle an endpoint's http binding in the generated router and the skeleton for the service logic in an API service.
* Include interface documentation in Go Server generation.
* Issue #3084: add hideGenerationTimestamp option to Go server generator.
* Issue #3084: use hideGenerationTimestamp in go server sample script.
* Update Go server samples.
