Rename core module

src/operator_repo/__init__.py

@@ -1,3 +1,3 @@
-from .classes import Bundle, Operator, Repo
+from .core import Bundle, Operator, Repo
 
 __all__ = ["Repo", "Operator", "Bundle"]

src/operator_repo/cli.py

@@ -12,7 +12,7 @@ from pathlib import Path
 from typing import Optional, Union
 
 from .checks import get_checks, run_suite
-from .classes import Bundle, Operator, Repo
+from .core import Bundle, Operator, Repo
 from .exceptions import OperatorRepoException