add and display gradle kotlin dsl tasks

build.gradle.kts

tasks.register("before") {
    doLast {
        val myVar = "Hello variable"
        println(myVar)
    }
}

tasks.register("after") {
    doLast {
        println("Hello, 2!")
    }
}

tasks.named<Test>("test") {
    dependsOn("before")
    finalizedBy("after")
}

tasks.register("listTasks") { 
    doFirst { 
        println("Available tasks: ${project.tasks.forEach { println(it.name) }}") 
    } 
}

tasks.named("build") {
  dependsOn("customTask") // creates implicit dependencies
  mustRunAfter("customTask") // controls the execution order
}