Support page up/down in lists

When scrolling through long lists (eg., a TV series with dozens or hundreds of files in one directory) it would be great to be able to skip 10 items forward or backward.

For the Apple TV version, perhaps the Chapter or Skip forward and back buttons could be used?

For the macOS version, the page up/page down keys could be used. That’s Fn+Up and Fn+Down on the tenkeyless keyboards.