[ticket/12602] Add files to print the cron list and test files.

PHPBB3-12602

tests/console/cron/tasks/simple_ready.php

@@ -0,0 +1,13 @@
+<?php
+
+class phpbb_cron_task_core_simple_ready extends \phpbb\cron\task\base
+{
+	public function get_name()
+	{
+		return get_class($this);
+	}
+
+	public function run()
+	{
+	}
+}