Add OfflineList deserialization test, fix issues

SabreTools.Models/OfflineList/Configuration.cs

@@ -9,6 +9,9 @@ namespace SabreTools.Models.OfflineList
         [XmlElement("datName")]
         public string? DatName { get; set; }
 
+        [XmlElement("imFolder")]
+        public string? ImFolder { get; set; }
+
         [XmlElement("datVersion")]
         public string? DatVersion { get; set; }
 
@@ -35,7 +38,19 @@ namespace SabreTools.Models.OfflineList
         [XmlElement("search")]
         public Search? Search { get; set; }
 
-        [XmlElement("romtitle")]
+        [XmlElement("romTitle")]
         public string? RomTitle { 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
     }
 }