I did a lot of merge requests and, sometimes, I do a merge request in different moments and, obviously, I forgot the already checked files. I propose the addition of an "Approve" button on each changed file of the `Changes` section of a merge request, like this (e.g.):  and, after clicking the button, the change should be collapsed:  Of course, if someone pushes some change to an "Approved" file, the file should: - return not approved (like in the first screenshot) - show a custom warning, like this: