feat(Core/Misc): includes cleanup (#5953)

src/server/game/Misc/AsyncAuctionListing.h

@@ -5,6 +5,7 @@
 #include "EventProcessor.h"
 #include "WorldPacket.h"
 #include "ObjectGuid.h"
+#include <mutex>
 
 class AuctionListOwnerItemsDelayEvent : public BasicEvent
 {

src/server/game/Misc/AvgDiffTracker.h

@@ -2,6 +2,7 @@
 #define __AVGDIFFTRACKER_H
 
 #include "Common.h"
+#include <cstring>
 
 #define AVG_DIFF_COUNT 500
 

src/server/game/Misc/GameGraveyard.h

@@ -3,6 +3,8 @@
 
 #include "Common.h"
 #include "SharedDefines.h"
+#include <map>
+#include <unordered_map>
 
 struct GraveyardStruct
 {

src/server/game/Misc/SavingSystem.h

@@ -2,6 +2,8 @@
 #define __SAVINGSYSTEM_H
 
 #include "Common.h"
+#include <list>
+#include <mutex>
 
 // to evenly distribute saving players to db