Function offer_channel_unit

pub async fn offer_channel_unit<T: 'static + VmbusDevice>(
    driver: &impl Spawn,
    state_units: &StateUnits,
    vmbus: &VmbusServerHandle,
    channel: T,
) -> Result<SpawnedUnit<ChannelUnit<T>>>

Offers a channel, creates a unit for it, and adds it to state_units.