Add template for assignment 3

ass3-worker/src/test/java/dst/ass3/worker/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * This package allows you to write your own integration tests for the worker. For example, you could use the
+ * RabbitTemplate, Jedis, and DockerClient library to programmatically insert test data, and verify whether containers
+ * are spawned correctly.
+ */
+package dst.ass3.worker;