[CI-CD] Create GH Actions for releases and uploading package to Pypi

[piconti]

In order to ensure the new version of this package is correctly packages into a release and uploaded to Pypi at each pull request, it would be ideal to create GitHub actions for this.

A GitHug action to upload the package to Test Pypi will already be added very soon, but it would be ideal to extend this behavior to releases and actual Pypi.

Information and resources on how to do this are widely accessible, and the following were used to greate the GitHub actions for Test Pypi and are linked here for future reference:
Example of yml file
Creating distribution archives
How to publish a python package from Github actions
Quickstart for GitHub Actions

The action points to do this are:

• Adding the Pypi token to the impresso GitHub secrets (rights needed)
• Adding pontentially required tokens for releases to the GitHub secrets (rights needed)
• Updating the GitHub Actions workflow to trigger the uploads in an appropriate order
• Ensure process works