Add Copy + Clone for channel structs

[petekubiak]

Say for example I want to perform single-ended measurements on each of the channels in an async environment, I might want to create a function like this:

type Ads<'a, IC, CONV> =
    Ads1x1x<I2cDevice<'a, NoopRawMutex, I2c<'static, Async>>, IC, CONV, ads1x1x::mode::OneShot>;

async fn read_ads_channel<'a, IC, CONV, CH>(ads: &mut Ads<'a, IC, CONV>, channel: CH) -> i16
where
    CH: ads1x1x::ChannelId<Ads<'a, IC, CONV>> + Clone + Copy,
    CONV: ads1x1x::ConvertMeasurement,
{
    loop {
        match ads.read(channel) {
            Err(nb::Error::WouldBlock) => Timer::after_millis(1).await,
            Err(nb::Error::Other(error)) => error!("{error:?}"),
            Ok(measurement) => break measurement,
        }
    }
}

Unfortunately though this won't compile as the channel can't be copied or cloned, which is required for it to be used in the loop. As far as I can tell I think #[derive(Copy, Clone)] could be added to the struct declaration macro.