Add Continuous Deployment to this repo

[Zeitsperre]

• roocs-utils version: Current
• Python version: Any
• Operating System: N/A

Description

Currently, the deployment method for adding new versions to PyPI is entirely manual. We should leverage GitHub Workflows to make this easier.

For an example, see:

• https://github.com/roocs/clisops/blob/master/.github/workflows/publish-pypi-production.yml and
• https://github.com/roocs/clisops/blob/master/.github/workflows/prepare-release.yml

[cehbrecht]

@Zeitsperre we like to move roocs-utils into clisops: #107