Added shutdown method to HomekitRoot to stop http and advertising

Author: Andy Lintner

src/main/java/com/beowulfe/hap/HomekitRoot.java

@@ -101,5 +101,14 @@ public void start() {
 					}
 		});
 	}
+	
+	/**
+	 * Stops advertising and handling the Homekit accessories.
+	 */
+	public void stop() {
+		advertiser.stop();
+		webHandler.stop();
+		started = false;
+	}
 
 }

src/main/java/com/beowulfe/hap/impl/HomekitWebHandler.java

@@ -8,6 +8,8 @@
 public interface HomekitWebHandler {
 
 	public CompletableFuture<Integer> start(HomekitClientConnectionFactory clientConnectionFactory);
+	
+	public void stop();
 
 	public void resetConnections();
 

src/main/java/com/beowulfe/hap/impl/http/impl/HomekitHttpServer.java

@@ -11,6 +11,7 @@ public class HomekitHttpServer implements HomekitWebHandler {
 	private final int port;
 	private final int nThreads;
 
+	@Override
 	public void stop() {
 		if (this.service != null) {
 			this.service.shutdown();

src/main/java/com/beowulfe/hap/impl/jmdns/JmdnsHomekitAdvertiser.java

@@ -44,4 +44,8 @@ public void advertise(String label, String mac, int port) throws Exception {
     	}));
 	}
 
+	public void stop() {
+		jmdns.unregisterAllServices();
+	}
+	
 }