Core/Players: Add PlayerExtraFlags for tracking race change, level boost, and raf level grant usage

Port From (https://github.com/TrinityCore/TrinityCore/commit/c2751f9195959a199413e332d2b595a60e4a6d35)

Source/Game/Entities/Player/Player.cs

@@ -6391,6 +6391,13 @@ namespace Game.Entities
                 SendMovementSetCollisionHeight(scale * GetCollisionHeight(), UpdateCollisionHeightReason.Scale);
         }
 
+        bool HasRaceChanged() { return m_ExtraFlags.HasFlag(PlayerExtraFlags.HasRaceChanged); }
+        void SetHasRaceChanged() { m_ExtraFlags |= PlayerExtraFlags.HasRaceChanged; }
+        bool HasBeenGrantedLevelsFromRaF() { return m_ExtraFlags.HasFlag(PlayerExtraFlags.GrantedLevelsFromRaf); }
+        void SetBeenGrantedLevelsFromRaF() { m_ExtraFlags |= PlayerExtraFlags.GrantedLevelsFromRaf; }
+        bool HasLevelBoosted() { return m_ExtraFlags.HasFlag(PlayerExtraFlags.LevelBoosted); }
+        void SetHasLevelBoosted() { m_ExtraFlags |= PlayerExtraFlags.LevelBoosted; }
+        
         public uint GetXP() { return m_activePlayerData.XP; }
         public uint GetXPForNextLevel() { return m_activePlayerData.NextLevelXP; }
 

Source/Game/Handlers/CharacterHandler.cs

@@ -1795,7 +1795,8 @@ namespace Game
             {
                 stmt = DB.Characters.GetPreparedStatement(CharStatements.UPD_CHAR_RACE);
                 stmt.AddValue(0, (byte)factionChangeInfo.RaceID);
-                stmt.AddValue(1, lowGuid);
+                stmt.AddValue(1, (ushort)PlayerExtraFlags.HasRaceChanged);
+                stmt.AddValue(2, lowGuid);
 
                 trans.Append(stmt);
             }