Fix GeoLite crash, add PerfMode profiling, reload cache invalidation

- GeoLite/MaxMind lookup wrapped in try/catch and disabled for the session on failure
  (stops the per-tick exception spam when the assembly cannot load during hot-reload)
- New PerfMode config option: writes performance logs to logs/perf_<date>.txt
  (DisableAll/SetSkill/PlayerDeath totals, per-skill SkillAction timings,
  aggregated OnTick/CheckTransmit avg-max summaries)
- css_reload now invalidates the skill-info and freeze-time caches
- Removed the last null-forgiving player lookups (Command, Armored, Baseball,
  FriendlyFire, OneShot)

jRandomSkills - SRC Files/src/player/PlayerOnTick.cs

@@ -17,11 +17,13 @@ namespace src.player
                 UpdateGameRules();
                 if (Server.TickCount % 2 != 0) return;
 
+                long perfStart = PerfLog.Start();
                 foreach (var player in Utilities.GetPlayers())
                 {
                     if (player != null && player.IsValid)
                         UpdatePlayerHud(player);
                 }
+                PerfLog.Sample("OnTick(hud)", perfStart);
             });
 
             Instance.RegisterListener<OnMapStart>(OnMapStart);