[feature] Release workflow: automatically publish tag and release #520
Description
Follow up of #496.
We could add a github action which detects the commit message generated by the releaser tool and automatically push a git tag and publish a release. This would help further automating the release workflow, which now needs the review and approval of a maintainer, while another maintainer needs to keep the release flow open waiting for the PR to get merged, which may not happen while the maintainer is still around.
We also need to modify the releaser tool to play well with this case, I guess it should be able to go straight to the git tag part and release part. Not sure what we can do with the signature, I guess I can create a new signature and make it available as an organization secret.