support general Julia code returns a circuit

[Roger-luo]

This does not work for now.

@device function single_qubit_layer(configs::AbstractVector, gateset = (X, Y, Z))
    @inbounds for k in 1:size(configs, 1)
        idx = configs[k]
        if idx > 0
            idx => gateset[idx]
        end
    end
end