Libraries

This change looks dramatic, but it's just separating out the already-split namespaces into separate top-level folders. In theory, every single one could be built into their own Nuget package. `SabreTools.Serialization` still builds the normal Nuget package that is used by all other projects and includes all namespaces.

SabreTools.Data.Models/Metadata/Sample.cs

@@ -0,0 +1,18 @@
+using System.Xml.Serialization;
+using Newtonsoft.Json;
+
+namespace SabreTools.Data.Models.Metadata
+{
+    [JsonObject("sample"), XmlRoot("sample")]
+    public class Sample : DatItem
+    {
+        #region Keys
+
+        /// <remarks>string</remarks>
+        public const string NameKey = "name";
+
+        #endregion
+
+        public Sample() => Type = ItemType.Sample;
+    }
+}