✨ Setup automated releases

[Ambro17]

Publish a new pypi release when a github release is created

Solves #56

[Ambro17]

Hello! Were you able to reach @andrew-d to setup the pypi token?

[Kludex]

Unfortunately, I can't create GH releases... I'll let this PR in standby in case we move python-multipart to an organization.

[Ambro17]

We can modify the trigger so it runs on a git tag. That way we can publish with your current permissions

[Kludex]

Ok, that works

[Ambro17]

Just changed it to run on every git tag that starts with v and is followed by anything. It can be more restrictive or less. Here are the docs of the supported syntax https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#patterns-to-match-branches-and-tags

And here i got the answer https://stackoverflow.com/questions/61891328/trigger-github-action-only-on-new-tags

[Kludex]

I think the tags here are just the version, no?

[Ambro17]

Right, for example git tag v0.0.5 + git push should trigger this workflow

[Kludex]

Gracias @Ambro17 :)