Scheduled Python publish

[lord-haffi]

Currently, the scheduled github action creates a git tag and pushes it to origin. Additionally, it does the same as the normal python-publish workflow (code is copy pasted). This is needed atm, because such a git tag is not a GitHub release. Therefore, the python-publish workflow would not be triggered.

It would be better to use the GitHub API to only create a full GitHub release. In this case GitHub would automatically trigger the existent python-publish workflow and we wouldn't need to have duplicate code in these actions.
An example of how you can create a release via the GitHub API is in the python-publish workflow where we push the new JSON-schemas.

BO4E-python/bo4e_schemas_create_release.py

Line 57 in 9995dce

def create_release(