- Modified DNAClassAttribute to also support usage on structs

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

BlendFile/DNA/NodeImageMultiFileSocket.cs

@@ -13,6 +13,7 @@ using System;
 namespace BlendFile.DNA {
     using BlendFile;
     
+    [DNAClassAttribute(617, "NodeImageMultiFileSocket")]
     public struct NodeImageMultiFileSocket {
         [DNAFieldAttribute(0, "short", "use_render_format", 2)]
         public short use_render_format;