Add missing Action<T> overloads to org.gradle.api.Project

[bamboo]

The following methods are missing a Action<T> or Spec<T> counterpart:

org.gradle.api.Project#task(java.util.Map, java.lang.String, groovy.lang.Closure)
org.gradle.api.Project#task(java.lang.String, groovy.lang.Closure)
org.gradle.api.Project#project(java.lang.String, groovy.lang.Closure)
org.gradle.api.Project#files(java.lang.Object, groovy.lang.Closure)
org.gradle.api.Project#fileTree(java.lang.Object, groovy.lang.Closure)
org.gradle.api.Project#ant(groovy.lang.Closure)
org.gradle.api.Project#configurations(groovy.lang.Closure)
org.gradle.api.Project#artifacts(groovy.lang.Closure)
org.gradle.api.Project#repositories(groovy.lang.Closure)
org.gradle.api.Project#dependencies(groovy.lang.Closure)
org.gradle.api.Project#buildscript(groovy.lang.Closure)
org.gradle.api.Project#container(java.lang.Class, groovy.lang.Closure)

[eskatos]

org.gradle.api.Project#container(java.lang.Class, groovy.lang.Closure) already has a strongly typed counterpart org.gradle.api.Project#container(java.lang.Class<T>, org.gradle.api.NamedDomainObjectFactory<T>)

[eskatos]

@bamboo I reverted the change because it was causing a failure I'd like to discuss with you when you get back, see https://builds.gradle.org/viewLog.html?buildId=1672517

[bamboo]

Right. We need to wait until #155 is implemented.

[eskatos]

Okay, I'll move this issue back in backlog then.

[eskatos]

A first PR against Gradle adds overloads for all methods but repositories() and dependencies(): gradle/gradle#1284

For those two methods we have to wait for the @HasImplicitReceiver annotation to take effect as they would break the version of gradle-script-kotlin included in Gradle.

Changes to add those two overloads are in a separate branch:
https://github.com/gradle/gradle/tree/pm-action-overloads-project-missing

[eskatos]

Removed the overload of Project#configure(Closure, Object) in master. That one too needs to wait.

Added on top of the pm-action-overloads-project-missing branch.

[bamboo]

Remaining work moved to #262.