Add 8 new filter parameters to GET /api/games/listing:
- minFps/maxFps: filter games with benchmarks in FPS range
- fsrSupport: filter games that have FSR entries
- protonNative: filter by proton status (proton/native/both)
- antiCheatStatus: filter by anti-cheat support status
- playabilityStatus: filter by playability (great/playable/needs_tweaks/unplayable)
- steamReviewScore: minimum Steam review score threshold
- isFree: filter free-to-play games
- hasMultiplayer: filter games with multiplayer support
Add 4 new sort options:
- performance: sort by average FPS (subquery)
- popularity: sort by recommendationsTotal
- release_date: sort by releaseDate
- steam_reviews: sort by steamReviewScore
Also returns additional fields in response: isFree, releaseDate,
steamReviewScore, recommendationsTotal, playabilityStatus,
onlineMultiplayerStatus.