Mark as reviewed so that it is easier to see what still requires review

When I have to review over 300 files, I can't do it in one sitting.

On Bitbucket server it is easy to see what code I've reviewed as the 'bold' styling is removed after I've looked at a file. This is re-added when the file is changed. In Bitbucket Cloud, this is not present.

It is common practice to create comments like 'lgtm' or Looks Good To Me at the top of each file. This is not ideal as it SPAMs people!

What I would like is a button that lets me mark each file as reviewed. Marking a file as reviewed should not send notification, and if the file is edited, then the flag should be removed.

A merge check that all files need to be reviewed would be a nice to have as well.

Why build this, apart from the usability reasons?

If stored in the backend, this would reduce the data storage requirements for a PR as a boolean would take less space than a bunch of comments.