Add default bucketing when adding an item

SabreTools.DatFiles/ItemDictionary.cs

@@ -21,10 +21,6 @@ namespace SabreTools.DatFiles
     /// <summary>
     /// Item dictionary with statistics, bucketing, and sorting
     /// </summary>
-    /// <remarks>
-    /// TODO: Make this into a database model instead of just an in-memory object
-    /// This will help handle extremely large sets
-    /// </remarks>
     [JsonObject("items"), XmlRoot("items")]
     public class ItemDictionary : IDictionary<string, ConcurrentList<DatItem>?>
     {