Enabling Automatization

[philip-paul-mueller]

This is a first draft that already works, kind of.
The workflow already works, not tested on this repo, but on my [development repo]https://github.com/philip-paul-mueller/test_package_index) it works already.

What is still missing:

• Check if the wheel can be installed.
• Install a hook in our DaCe fork, such that an update is triggered when it is updated (clarify condition when it is triggered).
• Install a hook in the GHEX repo, such that an update is triggered when it is updated (clarify condition when it is triggered, clarify which version number should be used).