- Modified DNAClassAttribute to also support usage on structs

- Added auto generation of DNAClass attributes on file generation
- Regenerated all files

BlendFile/DNA/bUserMenuItem_Prop.cs

@@ -13,6 +13,7 @@ using System;
 namespace BlendFile.DNA {
     using BlendFile;
     
+    [DNAClassAttribute(1004, "bUserMenuItem_Prop")]
     public struct bUserMenuItem_Prop {
         [DNAFieldAttribute(0, "bUserMenuItem", "item", 88)]
         public bUserMenuItem item;