Core/Conditions: Implemented conditions for spawn groups

Port From (https://github.com/TrinityCore/TrinityCore/commit/5d27939667cf3ca985a33b93646fa4e34445c8d3)

Source/Framework/Constants/ConditionConst.cs

@@ -113,6 +113,7 @@ namespace Framework.Constants
         AreatriggerClientTriggered = 30,
         TrainerSpell = 31,
         ObjectIdVisibility = 32,
+        SpawnGroup = 33,
         Max
     }
 

Source/Framework/Constants/MapConst.cs

@@ -231,8 +231,9 @@ namespace Framework.Constants
         ManualSpawn = 0x04,
         DynamicSpawnRate = 0x08,
         EscortQuestNpc = 0x10,
+        DespawnOnConditionFailure = 0x20,
 
-        All = (System | CompatibilityMode | ManualSpawn | DynamicSpawnRate | EscortQuestNpc)
+        All = (System | CompatibilityMode | ManualSpawn | DynamicSpawnRate | EscortQuestNpc | DespawnOnConditionFailure)
     }
 
     [Flags]