message: Allow `non_camel_case_types` for EventBase ident
diff: @@ -88,6 +88,7 @@ impl<'a> Events<'a> {
  let base_event_ident =
  proc_macro2::Ident::new("__ink_EventBase", Span::call_site());
  quote! {
  + #[allow(non_camel_case_types)]
  #[derive(::scale::Encode, ::scale::Decode)]
  pub enum #base_event_ident {
  #( #event_idents(#event_idents), )*
  