std::tuple< std::vector< std::decay_t< typename attribute::ConstMapResult< T > > >, int64_t > get_simplex_attributes(const Mesh &mesh, const wmtk::attribute::Accessor< T > &accessor, const PrimitiveType primitive_type, const simplex::Simplex &simplex_in, const std::optional< wmtk::Tuple > &vertex_marker)
get attributes from a simplex