generate python wheels

References [Task] Imp. #134: Reflectivity Fitting: Python Wheel for package django_remote_submission

Work Done:

• update setup.py and setup.cfg following best practices
• setup bumpversion to increment the version
• a python wheel artifact is created at the last step in the pipeline of a Merge Request. Artifact expires in a week.
• a python wheel artifact is created when updating branch next, appended with a build number, and uploaded to the registry
• a python wheel artifact is created when updating branch main with a new version, labelled with the package version, and uploaded to the registry