added a /api/food_orders/latest/ endpoint to recieve the latest food order

src/Repository/FoodOrderRepository.php

@@ -62,4 +62,16 @@ final class FoodOrderRepository extends ServiceEntityRepository
             ->getQuery()
             ->getResult();
     }
+
+    /**
+     * @return FoodOrder|null
+     */
+    public function findLatestOrder(): ?FoodOrder
+    {
+        return $this->createQueryBuilder('alias')
+            ->orderBy('alias.id', 'DESC')
+            ->setMaxResults(1)
+            ->getQuery()
+            ->getOneOrNullResult();
+    }
 }