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/N3DS/ExeFSFileHeader.cs

@@ -0,0 +1,33 @@
+using System.Runtime.InteropServices;
+
+namespace SabreTools.Data.Models.N3DS
+{
+    /// <summary>
+    /// There are a maximum of 10 file headers in the ExeFS format. (This maximum
+    /// number of file headers is disputable, with makerom indicating a maximum of
+    /// 8 sections and makecia indicating a maximum of 10. From a non-SDK point of
+    /// view, the ExeFS header format can hold no more than 10 file headers within
+    /// the currently define size of 0x200 bytes.)
+    /// </summary>
+    /// <see href="https://www.3dbrew.org/wiki/ExeFS#File_headers"/>
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
+    public sealed class ExeFSFileHeader
+    {
+        /// <summary>
+        /// File name
+        /// </summary>
+        /// <remarks>8 bytes</remarks>
+        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
+        public string FileName = string.Empty;
+
+        /// <summary>
+        /// File offset
+        /// </summary>
+        public uint FileOffset;
+
+        /// <summary>
+        /// File size
+        /// </summary>
+        public uint FileSize;
+    }
+}