Update/ scalar input array

[xinyuli1204]

update C++ and PYTHON

supports:
Input<T []> input_offsets{"input_offsets"};

        std::array<int, 4> offsets = {1, 2, 3, 4};
        auto n = b.add("test_scalar_array")(in, &offsets).set_params(Param("input_offsets.size", 4));
        n["output"].bind(outs);
        b.run();