feat: connector credentials check

src/Notifier/ValidateConnectorCredentialsErrorNotification.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Notifier;
+
+use App\Entity\Connector;
+use Symfony\Bridge\Twig\Mime\TemplatedEmail;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Notifier\Message\EmailMessage;
+use Symfony\Component\Notifier\Notification\Notification;
+use Symfony\Component\Notifier\Recipient\EmailRecipientInterface;
+
+class ValidateConnectorCredentialsErrorNotification extends Notification
+{
+    public function __construct(
+        private readonly Address $sender,
+        private readonly Connector $connector,
+    ) {
+        parent::__construct();
+    }
+
+    public function asEmailMessage(EmailRecipientInterface $recipient): EmailMessage
+    {
+        return new EmailMessage((new TemplatedEmail())
+            ->from($this->sender)
+            ->to($recipient->getEmail())
+            ->subject('Connector credentials error')
+            ->htmlTemplate('emails/errors/connector_credentials.html.twig')
+            ->locale('en')
+            ->context([
+                'connector' => $this->connector,
+            ]));
+    }
+}