fix an import package

Author: sadeghim

src/dwcahandler/dwca/__init__.py

@@ -22,6 +22,7 @@
 import logging
 from collections import namedtuple
 from dataclasses import dataclass, field
+from enum import Enum
 from functools import wraps
 from typing import Optional, Union
 
@@ -226,7 +227,6 @@ def add_data(self, other_csv_file_type: ContentData):
             self.type = other_csv_file_type.type
         return False
 
-from enum import Enum
 
 from dwcahandler.dwca.base_dwca import BaseDwca
 from dwcahandler.dwca.core_dwca import DfContent, Dwca