Core/Items: Item bonus generation improvements

* Pass ItemContext to item creation wherever possible
* Support scaling item levels with m+ keystone levels (not used currently)
* Fixed item link validation when client sends it as default uninitialized bonus list with context only
* Support scaling items depending on current active season (seasons not implemented)
* Implemented content tuning redirection
Port From (https://github.com/TrinityCore/TrinityCore/commit/0fb8765a6638fd947b59fce44d5c31251d0cdadd)

Source/Framework/Constants/ItemConst.cs

@@ -1132,7 +1132,15 @@ namespace Framework.Constants
         SquishUsingItemLevelAsPlayerLevel = 0x4000,
         AlwaysShowPriceInTooltip = 0x8000,
         CosmeticItem = 0x10000,
-        NoSpellEffectTooltipPrefixes = 0x20000
+        NoSpellEffectTooltipPrefixes = 0x20000,
+        IgnoreCosmeticCollectionBehavior = 0x40000,
+        NpcOnly = 0x80000,
+        NotRestorable = 0x100000,
+        DontDisplayAsCraftingReagent = 0x200000,
+        DisplayReagentQualityAsCraftedQuality = 0x400000,
+        NoSalvage = 0x800000,
+        Recraftable = 0x1000000,
+        CcTrinket = 0x2000000,
     }
 
     [Flags]