Adding maven archetype for a project.

Change-Id: I7bcdc45979c478c523e887b2de52e601570cdfae
diff --git a/tools/package/archetypes/bundle/src/main/java/sample/bundle/AppService.java b/tools/package/archetypes/bundle/src/main/java/sample/bundle/AppService.java
new file mode 100644
index 0000000..9e658d4
--- /dev/null
+++ b/tools/package/archetypes/bundle/src/main/java/sample/bundle/AppService.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package sample.bundle;
+
+/**
+ * Skeletal ONOS application API.
+ */
+public interface AppService {
+
+}