Introduce semver and static tests

Model/DataMapper/OrderItemsMapper.php

@@ -13,7 +13,6 @@ declare(strict_types=1);
 
 namespace Workshop\OrderExport\Model\DataMapper;
 
-use Magento\Catalog\Model\ProductTypeList;
 use Magento\Sales\Api\Data\OrderInterface;
 use Workshop\OrderExport\Model\DataMappingInterface;