[IMP] pms_api_rest: board service id @ service's service (datamodel & service)

pms_api_rest/datamodels/pms_board_service.py

@@ -16,3 +16,4 @@ class PmsBoardServiceInfo(Datamodel):
     name = fields.String(required=True, allow_none=False)
     roomTypeId = fields.Integer(required=True, allow_none=False)
     amount = fields.Float(required=False, allow_none=False)
+    boardServiceId = fields.Integer(required=False, allow_none=False)

pms_api_rest/services/pms_board_service_service.py

@@ -51,6 +51,7 @@ class PmsBoardServiceService(Component):
                     name=board_service.pms_board_service_id.display_name,
                     roomTypeId=board_service.pms_room_type_id.id,
                     amount=round(board_service.amount, 2),
+                    boardServiceId=board_service.pms_board_service_id,
                 )
             )
         return result_board_services