- Modified DNAClassAttribute to also support usage on structs

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

BlendFile/DNA/MaskSpline.cs

@@ -13,6 +13,7 @@ using System;
 namespace BlendFile.DNA {
     using BlendFile;
     
+    [DNAClassAttribute(410, "MaskSpline")]
     public class MaskSpline {
         [DNAFieldAttribute(0, "MaskSpline", "*next", 224)]
         public MaskSpline ptr_next;