enhancement: add backend to support load data from .py files #138
Description
Is your feature request related to a problem? Please describe.
It may be useful if anyconfig supports load data from .py (python) files.
Describe the solution you'd like
Add backend parser to load from .py files, and optionally dump data to .py files.
Describe alternatives you've considered
Don't add such feature.
Additional context
Prototype implementations to load data from .py files exist in https://github.com/ssato/python-anyconfig/blob/next/tests/base/utils.py#L32.