Add FPS logging to scheduler.

SQF/dayz_server/system/scheduler/sched_sync.sqf

@@ -23,3 +23,8 @@ sched_sync = {
 
 	objNull
 };
+
+sched_fps = {
+	diag_log format["SERVER FPS: %1  PLAYERS: %2",round diag_fps,playersNumber west];
+	objNull
+};