Added new effects, modified existing ones

new file:   Misc/MiscCleanUp.lua -- cleans up dead entities and vehicles from the world
	new file:   Player/PlayerAnnoyingInvisibleRCVehicle.lua Creates an invisible RC vehicle to track the player
	modified:   Weather/WeatherTrueSnow.lua - Added ability to see snowy footprints

Weather/WeatherTrueSnow.lua

@@ -12,6 +12,8 @@ EffectInfo = {
 
 function OnStart()
     REQUEST_CLIP_SET("move_f@injured")
+    snowyaseaHash = GET_HASH_KEY("asea2")
+    SetSurroundingPedsInVehicles(snowyaseaHash, 0)
 end
 
 function OnStop()