Function convolve_s4 

pub fn convolve_s4(
    conv_params: &ConvParams,
    quant_params: &PerTensorQuantParams,
    input_dims: &Dims,
    input: &[i8],
    filter_dims: &Dims,
    packed_kernel: &[i8],
    bias: Option<&[i32]>,
    output_dims: &Dims,
    output: &mut [i8],
) -> Result<()>

Performs per-tensor quantized int4 (s4) 2D Convolution layer.