Integrate with open source PR flow?

Hey, thanks for this project! Just getting reminded of it by @sibelius and it is still awesome!

What if we could have the best of both worlds (PRs to update upstream + patches to avoid having to npm publish)? Workflow:

1. You open a PR with the change that you would like
2. You click a button and an automated script (bot? GH action?) copies your change to a repo of your choice and holds a reference to it
3. Potentially other users also do the same as 2.
4. You make a change to the PR
5. The automated script creates PRs with the patch files to all referenced repos
6. The PR gets merged
7. The automated script creates PRs to all referenced repos, deleting the patch file and bumping the version number