Option to ignore an item, including on subsequent scans

[EnSt0rm]

Feature request:
Some of the movies I've got in Plex libraries include old classics, which may have been part of a larger collection, however some or all of the other films in that collection are considered 'lost films', and are simply no longer available anywhere.

The ability to check off items as 'ignored' so that they become hidden by default, would make it much easier to then review the other 'legitimate' hits when scanning to see what I'm missing that I might actually be able to obtain in the future.

If this could be implemented as a 'filtered' view, so that you can still show/hide what you've previously ignored, it would be great.