Add created to Service entity

This additional field will show us when a service is created.

See: https://www.pivotaltracker.com/story/show/187715470

migrations/Version20240610074359.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Surfnet\ServiceProviderDashboard\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Add the `created` datetime field on the service entity
+ */
+final class Version20240610074359 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE service ADD created DATETIME NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE service DROP created');
+    }
+}

src/Surfnet/ServiceProviderDashboard/Domain/Entity/Service.php

@@ -18,9 +18,11 @@
 
 namespace Surfnet\ServiceProviderDashboard\Domain\Entity;
 
+use DateTime;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
+use Gedmo\Mapping\Annotation as Gedmo;
 use Surfnet\ServiceProviderDashboard\Infrastructure\DashboardBundle\Repository\ServiceRepository;
 
 /**
@@ -63,6 +65,13 @@ class Service
     #[ORM\GeneratedValue(strategy: 'AUTO')]
     private $id;
 
+    /**
+     * @var DateTime $created
+     */
+    #[Gedmo\Timestampable(on: 'create')]
+    #[ORM\Column(type: 'datetime')]
+    private DateTime $created;
+
     /**
      * @var string
      */