Add Logiqx deserialization test, fix issues

SabreTools.Models/Logiqx/Dir.cs

@@ -9,10 +9,20 @@ namespace SabreTools.Models.Logiqx
         [XmlAttribute("name")]
         public string Name { get; set; }
 
-        [XmlAttribute("machine")]
-        public Game[]? Game { get; set; }
+        [XmlElement("game", typeof(Game))]
+        [XmlElement("machine", typeof(Machine))]
+        public GameBase[]? Game { get; set; }
 
-        [XmlAttribute("machine")]
-        public Machine[]? Machine { get; set; }
+        #region DO NOT USE IN PRODUCTION
+
+        /// <remarks>Should be empty</remarks>
+        [XmlAnyAttribute]
+        public XmlAttribute[]? ADDITIONAL_ATTRIBUTES { get; set; }
+
+        /// <remarks>Should be empty</remarks>
+        [XmlAnyElement]
+        public object[]? ADDITIONAL_ELEMENTS { get; set; }
+
+        #endregion
     }
 }