Implement event notification of resource event

When a resource is registered or unregistered, a resource event is notified

Change-Id: I40e66761966ef2126366424a14bb3193fc850e5a
diff --git a/core/api/src/main/java/org/onosproject/net/newresource/ResourceStoreDelegate.java b/core/api/src/main/java/org/onosproject/net/newresource/ResourceStoreDelegate.java
new file mode 100644
index 0000000..a0b9bb2
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/newresource/ResourceStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 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 org.onosproject.net.newresource;
+
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Resource store delegate abstraction.
+ */
+public interface ResourceStoreDelegate extends StoreDelegate<ResourceEvent> {
+}