Replace explicit loop with memcpy.

///  @brief Implimentation of the c binding library.

//------------------------------------------------------------------------------

#include <cstring>

#include "ml_c_embedder.h"

#include <ml_embedder.hpp>

                       const int *in_shape,

                       const size_t num_dims) {

    mlx::core::SmallVector<int> shape(num_dims);

    for (size_t i = 0; i < num_dims; i++) {

        shape[i] = in_shape[i];

    }

    std::memcpy(shape.data(), in_shape, num_dims*sizeof(int));

    return reinterpret_cast<ml_model> (new ml_embedder::mlx_model(std::string(filename),

                                                                  shape));