Support common keywords

For Github / Gitlab / Gitea and others they all support common keywords for referencing issues in a commit message:

https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword

Such as `Closes #1`

It would be nice to recognize those patterns here as well