use regular php files instead of twig

app/View/ViewController.php

@@ -9,6 +9,9 @@ class ViewController
 {
     public function admin(Response $response, Twig $view): Response
     {
-        return $view->render($response, 'admin.html.twig', []);
+        $html = file_get_contents(__DIR__.'/../../views/templates/admin.php', true);
+        $response->getBody()->write($html);
+
+        return $response;
     }
 }