feat: notify configured recipients when something is booked

migrations/Version20260928124153.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260928124153 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Adds per-type settings, holding the notification recipients';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE resource_type_settings (id INT AUTO_INCREMENT NOT NULL, type VARCHAR(255) NOT NULL, notification_recipients JSON NOT NULL, UNIQUE INDEX uniq_resource_type_settings_type (type), PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP TABLE resource_type_settings');
+    }
+}