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/OLE/ArrayHeader.cs

@@ -0,0 +1,29 @@
+namespace SabreTools.Data.Models.OLE
+{
+    /// <summary>
+    /// The ArrayHeader packet represents the type and dimensions of an array property type.
+    /// </summary>
+    /// <see href="https://winprotocoldoc.z19.web.core.windows.net/MS-OLEPS/%5bMS-OLEPS%5d.pdf"/>
+    public class ArrayHeader
+    {
+        /// <summary>
+        /// MUST be set to the value obtained by clearing the VT_ARRAY (0x2000) bit of
+        /// this array property's PropertyType value.
+        /// </summary>
+        public PropertyType Type { get; set; }
+
+        /// <summary>
+        /// An unsigned integer representing the number of dimensions in the array
+        /// property. MUST be at least 1 and at most 31.
+        /// </summary>
+        public uint NumDimensions { get; set; }
+
+        /// <summary>
+        /// MUST be a sequence of ArrayDimension packets
+        ///
+        /// The number of scalar values in an array property can be calculated from the ArrayHeader packet
+        /// as the product of the Size fields of each of the ArrayDimension packets.
+        /// </summary>
+        public ArrayDimension[] Dimensions { get; set; } = [];
+    }
+}