Removed "core" project dependency

Signed-off-by: Rogiel <rogiel@rogiel.com>

src/main/java/com/l2jserver/service/Service.java

@@ -0,0 +1,27 @@
+package com.l2jserver.service;
+
+public interface Service {
+	/**
+	 * Start this service
+	 * 
+	 * @throws ServiceStartException
+	 *             if an error occurred
+	 */
+	void start() throws ServiceStartException;
+
+	/**
+	 * Stop this service
+	 * 
+	 * @throws ServiceStopException
+	 *             if an error occurred
+	 */
+	void stop() throws ServiceStopException;
+
+	/**
+	 * Stop this service
+	 * 
+	 * @throws ServiceException
+	 *             if an error occurred
+	 */
+	void restart() throws ServiceException;
+}