Update Listxml deserialization test, fix issues

SabreTools.Models/Listxml/Game.cs

@@ -0,0 +1,12 @@
+using System.Xml.Serialization;
+
+namespace SabreTools.Models.Listxml
+{
+    [XmlRoot("game")]
+    public class Game : GameBase
+    {
+        /// <remarks>Appears after Manufacturer</remarks>
+        [XmlElement("history")]
+        public string? History { get; set; }
+    }
+}