Add base data class for checks models

src/ngohub/models/checks.py

@@ -1,12 +1,13 @@
 from dataclasses import dataclass
 from typing import Union
 
+from ngohub.models.core import BaseDataclass
 from ngohub.models.organization import OrganizationApplication
 from ngohub.models.user import User
 
 
 @dataclass
-class CheckOrganizationUserApplication:
+class CheckOrganizationUserApplication(BaseDataclass):
     user: Union[User, None]
     application: Union[OrganizationApplication, None]
     has_access: Union[bool, None]