Core: Remove Player.h dependency from all the possible headers

src/server/game/Handlers/SpellHandler.cpp

@@ -32,6 +32,7 @@
 #include "ScriptMgr.h"
 #include "GameObjectAI.h"
 #include "SpellAuraEffects.h"
+#include "Player.h"
 
 void WorldSession::HandleClientCastFlags(WorldPacket& recvPacket, uint8 castFlags, SpellCastTargets& targets)
 {