derive: Explicit allow non_camel_case_types

Summary:
Rustc implicitly allows this lint in macro generated code. r-a used to do the same but there seems to be a bug where that's no longer the case, so now there are warning everywhere.

Regardless, explicit allow is better anyway

Reviewed By: IanChilds

Differential Revision: D65008605

fbshipit-source-id: 36bb726b5fda4439cc92746911622d9d6bb436c0

starlark_derive/src/module/render/fun.rs

@@ -266,6 +266,7 @@ pub(crate) fn render_fun(x: StarFun) -> syn::Result<syn::Stmt> {
     let this_outer_param = this_outer_param.into_iter();
 
     let struct_def: syn::ItemStruct = syn::parse_quote! {
+        #[allow(non_camel_case_types)]
         struct #struct_name {
             #( #struct_fields, )*
         }