Macro dequant_op_flow

macro_rules! dequant_op_flow {
    (
        ty $ty:ty, float_op $float_op:expr, $t1:expr, $t2:expr
    ) => { ... };
    (
        ty $ty:ty, float_op $float_op:expr, $tensor:expr
    ) => { ... };
}

Automatically applies dequantization -> float operation [-> quantization].

The output quantization step is optional. It is only performed when the input quantization scheme is propagated.