Accept Merge Request Automatically without the need of human interaction

Description

Sometimes you don't need the human interaction to merge the merge request. Sometimes you just need the pipeline status or in some cases you just want that every merge request will be merge automatically.

It would be great to have an option to accept every merge request automatically without the needed of having someone pressing the button.

Proposal

In Project settings > General > Merge request settings you could add a checkbox option to allow "Accept every merge request automatically". It should be unmarked by default.

One alternative is that it could be done only if the pipeline succeeds, or it could be integrated with the option "Only allow merge requests to be merged if the pipeline succeeds". If that option isn't check and you check the new option "Accept every merge request automatically" it could show a warning to let the user know that if the option "Accept every merge request automatically" is check and the option "Only allow merge requests to be merged if the pipeline succeeds" isn't check, the merge request will be automatically merge every time, even if the pipeline fails.