Core/Realms: Realmlist refactors

* Removed global realm variable from World and use RealmList everywhere
* Match auth build key with client version
* Restored allowedSecurityLevel checks for realmlist packet building
* Restored updating population field
Port From (https://github.com/TrinityCore/TrinityCore/commit/c4b710446d62c95eb8124175203fa5f394912594)

Source/Framework/Web/Rest/Realmlist/RealmListRAFInfo.cs

@@ -0,0 +1,17 @@
+// Copyright (c) CypherCore <http://github.com/CypherCore> All rights reserved.
+// Licensed under the GNU GENERAL PUBLIC LICENSE. See LICENSE file in the project root for full license information.
+
+using System.Text.Json.Serialization;
+using Framework.Web.Rest.Realmlist;
+
+namespace Framework.Web.Rest.Realmlist
+{
+    internal class RealmListRAFInfo
+    {
+        [JsonPropertyName("wowRealmAddress")]
+        public int WowRealmAddress { get; set; }
+
+        [JsonPropertyName("faction")]
+        public int Faction { get; set; }
+    }
+}

Source/Framework/Web/Rest/Realmlist/RealmListUpdatePart.cs

@@ -5,8 +5,11 @@ using System.Text.Json.Serialization;
 
 namespace Framework.Web
 {
-    public class RealmListUpdate
+    public class RealmListUpdatePart
     {
+        [JsonPropertyName("wowRealmAddress")]
+        public int WoWRealmAddress { get; set; }
+
         [JsonPropertyName("update")]
         public RealmEntry Update { get; set; } = new RealmEntry();
 

Source/Framework/Web/Rest/Realmlist/RealmListUpdates.cs

@@ -9,6 +9,6 @@ namespace Framework.Web
     public class RealmListUpdates
     {
         [JsonPropertyName("updates")]
-        public IList<RealmListUpdate> Updates { get; set; } = new List<RealmListUpdate>();
+        public IList<RealmListUpdatePart> Updates { get; set; } = new List<RealmListUpdatePart>();
     }
 }