Boost FPS mod

• Purpose: lighten client load by reducing chunk streaming and guiding players toward lighter anti-aliasing so low-end PCs keep a stable frame rate.
• Behavior: when a player is ready, the server clamps their view distance to a compact radius, caps chunk delivery (per second and per tick), and tightens the hot-load radius to avoid bursty updates.
• Player messaging: joins receive short chat notices that chunk range was optimized and a tip to use gentle AA settings (2x/FXAA) for smoother visuals.
• Usage: drop the built JAR into the server's mods/plugins folder; the tweaks apply automatically on player readiness without commands.
• Limits: does not change client anti-aliasing directly—players still adjust that client-side; visible distance is intentionally reduced to gain FPS; relies on the current PlayerRef API which logs a deprecation warning in newer servers.