Add OS: Windows, Linux, Mac as a filter.

[edgar1016]

I have a bunch of games and was wondering which ones had native Linux support so I could add them to my steam deck. It'd be nice to add a filter for "OS: Windows, Linux, Mac, Android" to look through since each game includes it in their post.

[Willy-JL]

Not really reasonable as you can run basically all Windows games on Linux with a tiny bit of wine / scripting effort

[edgar1016]

Understandable but sometime people don't wanna fiddle with wine to get a game running finding games with native Linux builds is just for convenience. No worries though I got it working on my fork.

[Willy-JL]

Was just saying that I didn't see the use so wasn't interested in implementing it myself, but I'm always open to merging PRs )