Core/AuctionHouse: After taking a break at the start of patch 8.3 auction house is now back in business.

Port From (https://github.com/TrinityCore/TrinityCore/commit/aced88b09bd918b0ed17b6c5e8a6048788600d9d)

Source/Framework/Constants/AuctionConst.cs

@@ -13,38 +13,86 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+ */
 
 namespace Framework.Constants
 {
-    public enum AuctionError
+    public enum AuctionResult
     {
         Ok = 0,
         Inventory = 1,
         DatabaseError = 2,
-        NotEnoughtMoney = 3,
+        NotEnoughMoney = 3,
         ItemNotFound = 4,
         HigherBid = 5,
         BidIncrement = 7,
         BidOwn = 10,
-        RestrictedAccount = 13
+        RestrictedAccountTrial = 13,
+        HasRestriction = 17,
+        AuctionHouseBusy = 18,
+        AuctionHouseUnavailable = 19,
+        CommodityPurchaseFailed = 21,
+        ItemHasQuote = 23
     }
 
-    public enum AuctionAction
+    public enum AuctionCommand
     {
         SellItem = 0,
         Cancel = 1,
         PlaceBid = 2
     }
 
-    public enum MailAuctionAnswers
+    public enum AuctionMailType
     {
-        Outbidded = 0,
+        Outbid = 0,
         Won = 1,
-        Successful = 2,
+        Sold = 2,
         Expired = 3,
-        CancelledToBidder = 4,
-        Canceled = 5,
-        SalePending = 6
+        Removed = 4,
+        Cancelled = 5,
+        Invoice = 6
+    }
+
+    public enum AuctionHouseResultLimits
+    {
+        Browse = 500,
+        Items = 50
+    }
+
+    public enum AuctionHouseFilterMask
+    {
+        None = 0x0,
+        UncollectedOnly = 0x1,
+        UsableOnly = 0x2,
+        UpgradesOnly = 0x4,
+        ExactMatch = 0x8,
+        PoorQuality = 0x10,
+        CommonQuality = 0x20,
+        UncommonQuality = 0x40,
+        RareQuality = 0x80,
+        EpicQuality = 0x100,
+        LegendaryQuality = 0x200,
+        ArtifactQuality = 0x400,
+    }
+
+    public enum AuctionHouseSortOrder
+    {
+        Price = 0,
+        Name = 1,
+        Level = 2,
+        Bid = 3,
+        Buyout = 4
+    }
+
+    public enum AuctionHouseBrowseMode
+    {
+        Search = 0,
+        SpecificKeys = 1
+    }
+
+    public enum AuctionHouseListType
+    {
+        Commodities = 1,
+        Items = 2
     }
 }