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/framework-bundle/Resources/config/mailer_transports.php

@@ -0,0 +1,91 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use Symfony\Component\Mailer\Bridge\Amazon\Transport\SesTransportFactory;
+use Symfony\Component\Mailer\Bridge\Google\Transport\GmailTransportFactory;
+use Symfony\Component\Mailer\Bridge\Mailchimp\Transport\MandrillTransportFactory;
+use Symfony\Component\Mailer\Bridge\Mailgun\Transport\MailgunTransportFactory;
+use Symfony\Component\Mailer\Bridge\Mailjet\Transport\MailjetTransportFactory;
+use Symfony\Component\Mailer\Bridge\OhMySmtp\Transport\OhMySmtpTransportFactory;
+use Symfony\Component\Mailer\Bridge\Postmark\Transport\PostmarkTransportFactory;
+use Symfony\Component\Mailer\Bridge\Sendgrid\Transport\SendgridTransportFactory;
+use Symfony\Component\Mailer\Bridge\Sendinblue\Transport\SendinblueTransportFactory;
+use Symfony\Component\Mailer\Transport\AbstractTransportFactory;
+use Symfony\Component\Mailer\Transport\NativeTransportFactory;
+use Symfony\Component\Mailer\Transport\NullTransportFactory;
+use Symfony\Component\Mailer\Transport\SendmailTransportFactory;
+use Symfony\Component\Mailer\Transport\Smtp\EsmtpTransportFactory;
+
+return static function (ContainerConfigurator $container) {
+    $container->services()
+        ->set('mailer.transport_factory.abstract', AbstractTransportFactory::class)
+            ->abstract()
+            ->args([
+                service('event_dispatcher'),
+                service('http_client')->ignoreOnInvalid(),
+                service('logger')->ignoreOnInvalid(),
+            ])
+            ->tag('monolog.logger', ['channel' => 'mailer'])
+
+        ->set('mailer.transport_factory.amazon', SesTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.gmail', GmailTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.mailchimp', MandrillTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.mailjet', MailjetTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.mailgun', MailgunTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.postmark', PostmarkTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.sendgrid', SendgridTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.null', NullTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.sendmail', SendmailTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.sendinblue', SendinblueTransportFactory::class)
+        ->parent('mailer.transport_factory.abstract')
+        ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.ohmysmtp', OhMySmtpTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory')
+
+        ->set('mailer.transport_factory.smtp', EsmtpTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory', ['priority' => -100])
+
+        ->set('mailer.transport_factory.native', NativeTransportFactory::class)
+            ->parent('mailer.transport_factory.abstract')
+            ->tag('mailer.transport_factory');
+};