Automate releases with GitHub Actions

[1spyral]

Closes #765

Creates a GitHub Actions workflow that builds and publishes a release upon a new version tag being added.

To create a release:
Your git tag must start with v or test- (for testing this workflow)

For testing, this release was generated:

This release was also previously generated but deleted because the changes associated were reverted:

Post review steps:

• Delete the test release
• Consider removing the test- prefix from the workflow entirely (exists as proof of concept)

[AbdulRahmanAlHamali]

So in this flow, we still need to first manually update the lib/semian/version.rb, as well as update the changelog, and create a tag. Correct?

I'm wondering if, instead, we can have a workflow that automatically does all of that. It asks you for the version number you want to update to (or maybe it asks you: do you want bugfix, minor or major), and then updates the file, the changelog, the tags, etc.

Worth calling out also: Ideally, we don't want to show most/all dependabot dependency update in the release or in the changelog. Pretty much all semian dependencies use the version of the application

[AbdulRahmanAlHamali]

what is that? 🤔

[1spyral]

This allows for the workflow to be called from other workflows (release workflow)

[1spyral]

Closing this PR to rework the behaviour.

New behaviour will ask for major, minor, or bugfix release version, and automate all release-related actions.