Second Carma method

gibbs_sampler.cpp

py::array_t<double> sample(const py::array_t<double> &state_init, int no_steps) const {
        
    // Convert to arma
    arma::imat state_init_arma = carma::arr_to_mat<arma::sword>(state_init);

    // Call
    arma::imat state_arma = GibbsSampler::sample(state_init_arma, no_steps);

    // Convert back to NumPy
    py::array_t<double> state = carma::mat_to_arr<arma::sword>(state_arma);

    return state;
}