Collect plain dunder metadata in Python code

## Short Description
In https://github.com/psf/requests/blob/333fa8d3f201f68b82d9e8f26be4987e869fd3bf/requests/__version__.py we have:
```
__title__ = 'requests'
__description__ = 'Python HTTP for Humans.'
__url__ = 'https://requests.readthedocs.io'
__version__ = '2.24.0'
__build__ = 0x022400
__author__ = 'Kenneth Reitz'
__author_email__ = 'me@kennethreitz.org'
__license__ = 'Apache 2.0'
__copyright__ = 'Copyright 2020 Kenneth Reitz'
```
It could be nice to collect these in .py file as package-like data

## Possible Labels

- new feature

## Select Category

- [ ] Enhancement
- [ ] Add License/Copyright
- [ ] Scan Feature
- [ ] Packaging
- [ ] Documentation
- [ ] Expand Support
- [ ] Other

## **Describe the Update**

## **How This Feature will help you/your organization**

## **Possible Solution/Implementation Details**

## **Example/Links if Any**

## **Can you help with this Feature**