Migrate many models to StructLayout

PortableExecutable/MenuHeaderExtended.cs

@@ -1,27 +1,30 @@
-namespace SabreTools.Models.PortableExecutable
+using System.Runtime.InteropServices;
+
+namespace SabreTools.Models.PortableExecutable
 {
     /// <summary>
     /// Defines the header for an extended menu template. This structure definition is for
     /// explanation only; it is not present in any standard header file.
     /// </summary>
     /// <see href="https://learn.microsoft.com/en-us/windows/win32/menurc/menuex-template-header"/>
+    [StructLayout(LayoutKind.Sequential)]
     public sealed class MenuHeaderExtended
     {
         /// <summary>
         /// The template version number. This member must be 1 for extended menu templates.
         /// </summary>
-        public ushort Version { get; set; }
+        public ushort Version;
 
         /// <summary>
         /// The offset to the first MENUEX_TEMPLATE_ITEM structure, relative to the end of
         /// this structure member. If the first item definition immediately follows the
         /// dwHelpId member, this member should be 4.
         /// </summary>
-        public ushort Offset { get; set; }
+        public ushort Offset;
 
         /// <summary>
         /// The help identifier of menu bar.
         /// </summary>
-        public uint HelpID { get; set; }
+        public uint HelpID;
     }
 }