feat: api endpoints and xml sync for contingents data

src/BusProNet/XmlLoader/HotelLoader.php

@@ -17,6 +17,7 @@ class HotelLoader extends AbstractLoader
         try {
             return $this->cache->get('bpn_hotels', function (ItemInterface $item) use ($filename) {
                 $item->expiresAfter(3 * 60 * 60);
+                $item->tag(['xml-sync']);
 
                 $hotels = [];