fix(joomla6): update webservices plugin for Joomla 6 typed event API

Joomla 6 changed SubscriberInterface event handlers to receive a typed
event object instead of pass-by-reference parameters. Update
onBeforeApiRoute() to accept BeforeApiRouteEvent and extract the
router via $event->getRouter().

Fixes #48

Authored-by: Moko Consulting

src/packages/plg_webservices_mokowaas/src/Extension/MokoWaaSApi.php

@@ -11,6 +11,7 @@ namespace Moko\Plugin\WebServices\MokoWaaS\Extension;
 defined('_JEXEC') or die;
 
 use Joomla\CMS\Plugin\CMSPlugin;
+use Joomla\CMS\Event\Application\BeforeApiRouteEvent;
 use Joomla\CMS\Router\ApiRouter;
 use Joomla\Event\SubscriberInterface;
 
@@ -36,14 +37,16 @@ final class MokoWaaSApi extends CMSPlugin implements SubscriberInterface
 	/**
 	 * Register API routes for MokoWaaS.
 	 *
-	 * @param   ApiRouter  $router  The API router
+	 * @param   BeforeApiRouteEvent  $event  The API route event (Joomla 6 typed event)
 	 *
 	 * @return  void
 	 *
 	 * @since   1.0.0
 	 */
-	public function onBeforeApiRoute(&$router): void
+	public function onBeforeApiRoute(BeforeApiRouteEvent $event): void
 	{
+		$router = $event->getRouter();
+
 		$router->createCRUDRoutes(
 			'v1/mokowaas/health',
 			'health',