Add GitHubManagerExtension.php

Signed-off-by: Nathanael Esayeas <nathanael.esayeas@protonmail.com>

src/Service/Extension/GitHubManagerExtension.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ghostwriter\Arm\Service\Extension;
+
+use Ghostwriter\Container\Interface\ContainerInterface;
+use Ghostwriter\Container\Interface\ExtensionInterface;
+use Override;
+
+final class GitHubManagerExtension implements ExtensionInterface
+{
+    #[Override]
+    public function __invoke(ContainerInterface $container, object $service): object
+    {
+        return $service;
+    }
+}