Create skeleton of possible DatItem new version

SabreTools.DatItems/DatItemDict.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+
+namespace SabreTools.DatItems
+{
+    /// <summary>
+    /// Format-agnostic representation of item data
+    /// </summary>
+    public class DatItemDict : Dictionary<string, object>
+    {
+        #region Common Keys
+
+        public const string NameKey = "name";
+
+        #endregion
+
+        public string? Name
+        {
+            get => ContainsKey(NameKey) ? this[NameKey] as string : null;
+            set => this[NameKey] = value;
+        }
+    }
+}