Automatically merge MPs with "Status" set to "Approved"

We can't do this as such because some other teams have workflows that use Approved as an indication that a merge bot should run tests and then merge if they pass. Having LP do the merge directly would bypass those teams' CI processes.

I'd definitely like us to have something that doesn't require external bots, but it will likely require working out a way to attach test results to merge proposals first.

It seems like this would be easily achieved via a separate 'merge' button and/or a 'approve and merge' state (CI systems could then also set 'approve and merge' following a successful run on 'approve'). Alternatively, having configuration that allows a specific repo to be configured for 'merge when changes are approved' would mean that people who do not rely on 'approved' for CI workflow could benefit from this sooner rather than later.

We'd like to do a merge button, but as I say it's our assessment that it would be best to have a way to attach test results to merge proposals first in order that it doesn't encourage people to merge untested code unnecessarily.