added new socket manager, errorhandling and testing is not finished yet

libs/React/Socket/ServerInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitterInterface;
+
+/** @event connection */
+interface ServerInterface extends EventEmitterInterface
+{
+    public function listen($port, $host = '127.0.0.1');
+    public function getPort();
+    public function shutdown();
+}