feat: groups price calculator admin crud, booking/offer flow and api

src/BpnConnect/Model/ContingentCalendarEntry.php

@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\BpnConnect\Model;
+
+readonly class ContingentCalendarEntry
+{
+    public function __construct(
+        public string $date,
+        public ContingentStatus $status,
+    ) {
+    }
+}