add 4K resolution info for skinners

[ronie]

add '4K' to the list of possible values that ListItem.VideoResolution and VideoPlayer.VideoResolution can return.

[da-anda]

this will also flag FullSBS / FullOU movies (stereoscopic) as 4K which is wrong

[MartijnKaijser]

perhaps add 3D flag when certain resolutions are detected too? would make couple of users happy

[da-anda]

@MartijnKaijser sure, this is on my roadmap. But if anybody else wants to give it a try, go ahead.

eidt: ok, let's consider this PR as correct as long as we don't have 3D flags/detection.

[MartijnKaijser]

should be "relatively easy" by detecting if it matches known FullSBS / FullOU resolutions and putting up a 3D flag for it instead of a HD one?
should fit right in this piece of code

[da-anda]

well, 3D flag is not only resolution depending. In case of FullSBS/OU you can detect it by resolution, but not for HalfSBS/OU, so we need some additional stream info/flag. This info is available inside DVDplayers stream details, but I'm not sure if it's also available here (not really familiar with this part of the code). Need to check. But let's not get too OT here and discuss it in it's own PR/forum.