migration symfony 5 4 (#300)

* symfony 5.4 (diff dev)

* symfony 5.4 (working)

* symfony 5.4 (update autoload)

* symfony 5.4 (remove swiftmailer mailer implementation)

* symfony 5.4 (php doc and split Global accessor class)


### Impacted packages:

composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies

composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies

lib/symfony/http-kernel/DataCollector/DataCollectorInterface.php

@@ -13,25 +13,24 @@ namespace Symfony\Component\HttpKernel\DataCollector;
 
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * DataCollectorInterface.
  *
  * @author Fabien Potencier <fabien@symfony.com>
- *
- * @method reset() Resets this data collector to its initial state.
  */
-interface DataCollectorInterface
+interface DataCollectorInterface extends ResetInterface
 {
     /**
      * Collects data for the given Request and Response.
      */
-    public function collect(Request $request, Response $response, \Exception $exception = null);
+    public function collect(Request $request, Response $response, \Throwable $exception = null);
 
     /**
      * Returns the name of the collector.
      *
-     * @return string The collector name
+     * @return string
      */
     public function getName();
 }