Filter Library for Linux native games

[notleks2411]

I'm not sure if this idea has been pitched, but it would be handy if we can filter the Library to see games that have native support on Linux while having Steam Play enabled.

Right now, when you enable Steam Play for all other titles, filtering by Linux still shows Windows games. It would be nice to have an option to filter our these, and just show games that have native Linux support.

[Thermal Lance]

Ya