Summary
Many users of the platform have lots of single author repos in GitHub, where they are the only person writing code. In these repos, Actions is often configured to run tests and catch regressions. Today, the workflow for these users entails submitting pull requests and then coming back to the site to merge and delete the branch.

We want to simplify this workflow for users and teams that make use of checks by natively allowing an option to auto-merge a pull request when all checks pass.

Intended Outcome
Increase developer productivity by allowing pull requests to be merged and closed without manual intervention.

How will it work?
We will add an option when submitting a pull request for review to auto-merge it if all checks pass and the pull request is mergeable into the target branch. A notification is also sent to the user when the pull request is closed. The user will be able to cancel this state, and revert it to a manual merge process.