Release automation

I noticed fixes are being merged, but they are not getting released, so I'd like to propose automating the releases here. The model that I'm proposing is one that we are following with Tuist for open source repositories that are not that actively maintained, and it's worked quite well. Here's the idea:

• We have a set of labels that we can use in PRs to indicate the type of change (e.g. changelog:fixed).
• On merge, we use git-cliff to determine if there are releasable changes (which we can identify through the labels)
• If so, we tag the commit, create the release notes, and create a new release on GitHub.

The role of maintainers would be to ensure the right label is being applied based on the type of change.