Core/NetworkIO: Improve packet spam solution

Implement an improved packet Anti-DoS by counting how many times the same opcode has been sent in the last second and applying the policy specified in the configs if the amount of packets exceeds a reasonable amount.
Credits to the original author who decided to share this with TrinityCore team.

src/server/game/Reputation/ReputationMgr.cpp

@@ -24,7 +24,7 @@
 #include "World.h"
 #include "ObjectMgr.h"
 #include "ScriptMgr.h"
-#include "Opcodes.h"
+#include "WorldSession.h"
 
 const int32 ReputationMgr::PointsInRank[MAX_REPUTATION_RANK] = {36000, 3000, 3000, 3000, 6000, 12000, 21000, 1000};