Enhanced Kotlin for Eclipse

Thank You! This plugin allows me to continue using Eclipse for projects containing Kotlin source sets.

For Eclipse 2023-03 v4.27 I did have to add the following to my `~/.gradle/init.gradle` to configure the Kotlin container:

allprojects {
    def fixKotlinContainer = true
    if (project.plugins.hasPlugin(EclipsePlugin)) {
        println "Configuring Eclipse for project ${eclipse.project.name}"
        eclipse.synchronizationTasks {
            def kotlinNature = (project.tasks.find({ it.name.matches("^compile.*Kotlin\$")}) != null) // find first kotlin compile task; null if none.
            if (kotlinNature) {
                if (fixKotlinContainer) {
                    println "Adding KOTLIN_CONTAINER for ${eclipse.project.name}"
                    eclipse.classpath.containers 'org.jetbrains.kotlin.core.KOTLIN_CONTAINER'
                }
            }
        }
    }
}