Verify reverted merge request is reverted

GitLab allows you to revert a merge request via the UI (https://docs.gitlab.com/ee/user/project/merge_requests/revert_changes.html#revert-a-merge-request).

At GitLab, we frequently use that revert button. But as a reviewer, I still have to manually check each line that it actually reverts each line correctly.

Feature request

Verify that that the revert commit reverts the reverted MR for 100% of the original MR. If this check is true, add a Reverted badge to the merge request.

If for some reason the diff in the reverted MR no longer reverts 100% of the original MR, don't display the Reverted badge