Groovy parity: Generate Kotlin DSL accessors for ArtifactHandler

[mkobit]

The ArtifactHandler is missing similar DSL methods for adding publishable artifacts.
In Groovy, we can do something like:

 configurations {
   //declaring new configuration that will be used to associate with artifacts
   schema
 }

 task schemaJar(type: Jar) {
   //some imaginary task that creates a jar artifact with some schema
 }

 //associating the task that produces the artifact with the configuration
 artifacts {
   //configuration name and the task:
   schema schemaJar
 }

In Kotlin, we need to use add:

artifacts {
  add("schema", schemaJar)
}

Expected Behavior

Similar DSL or alternative method of producing artifacts for Kotlin build scripts.

artifacts {
  schema(schemaJar)
}

Current Behavior

No accessors generated and must call the add methods.

Context

Creating additional publishable artifacts from a project that can be consumed by project dependencies.

Your Environment

• Gradle 4.8-rc-1

[eskatos]

Related to #710

[mkobit]

There seems to be some duplicate APIs between ArtifactHandler and ConfigurationPublications from Configuration.getOutgoing - does is still make sense for these to be added or something else around ArtifactHandler be done?

[eskatos]

Closing as delivered in #1020, thanks again @mkobit!