Create GitHub action for creating a release

[rcjsuen]

1. Creates a new tag with vX.Y.Z based on bumping the last tag. We could consider having a selection of major/minor/patch when running the workflow so that the person triggering the release can decide what the version bump should be.
2. Creates a release on GitHub associated with the tag.

We shouldn't need to trigger another build manually as a build should be triggered automatically when the tag gets created.