Constant kcl_lib::std::shapes::CIRCLE_FN

pub const CIRCLE_FN: &str = r#"
(center, radius, surface, tag?) => {
const sg = startProfileAt([center[0] + radius, center[1]], surface)
    |> arc({
       angle_end: 360,
       angle_start: 0,
       radius: radius,
       tag: tag
     }, %)
    |> close(%)
  return sg
}
    "#;