Method check

include/covscript/core/cni.hpp:321–328

	template <typename T, int index>
	struct check_args_helper {
		static char check(const any &val)
		{
			if (!val.is_type_of<T>())
				throw cs::runtime_error("Invalid Argument. At " + std::to_string(index + 1) + ". Expected " +
				                        cxx_demangle(get_name_of_type<T>()) + ", provided " + val.get_type_name());
			else
				return 0;
		}
	};

	template <int index>