feat: add guest notification center

app/Enums/GuestNotificationDeliveryStatus.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Enums;
+
+enum GuestNotificationDeliveryStatus: string
+{
+    case NEW = 'new';
+    case READ = 'read';
+    case DISMISSED = 'dismissed';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::NEW => __('Neu'),
+            self::READ => __('Gelesen'),
+            self::DISMISSED => __('Ausgeblendet'),
+        };
+    }
+}