[CORE][EXTENSIONS] Added extension (modules, plugins) loading and test plugin, which is able to handle events

src/Controller/NetworkPublic.php

@@ -2,15 +2,15 @@
 
 namespace App\Controller;
 
-use App\Util\GSEvent;
-
+use App\Util\GSEvent as Event;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 
 class NetworkPublic extends AbstractController
 {
     public function __invoke()
     {
-        GSEvent::handle('test', ['foobar']);
+        Event::handle('Test', ['foobar']);
+
         return $this->render('network/public.html.twig', []);
     }
 }