Keyboard shortcuts to navigate "Files Changed" tab #2893

I would love to be able to navigate the "Files Changed" tab with the keyboard. My suggestion would be j and k for "next" and "previous" file, and x to mark file as viewed.

Currently j, k and x show up as site wide shortcuts for "move selection down", "up" and "toggle selection" respectively, but they don't seem to do anything in the "Files Changed" tab.

Example URL: https://github.com/org/repo/pull/1234/files