Remove overhead added by *Scope classes in Kotlin DSL via Kotlin 1.3 inline data classes

[bamboo]

According to this blog post Kotlin 1.3 will introduce inline data classes.

Inline data classes would allow us to remove the overhead from types such as DependencyHandlerScope, NamedDomainObjectContainerScope, etc whose only purpose is to wrap a Gradle type in order to provide a Kotlin-friendly API.

[stale]

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[Tapchicoma]

Still would be nice to have this performance optimization.

[eskatos]

This would be a binary breaking change and should be done on a major release.

Doing this we could get rid of the whole org.gradle.kotlin.dsl.delegates internal package.

[eskatos]

Another option to completely get rid of *Scope would be to use Kotlin context receivers which will be ABI stable in Kotlin 2.0.