Function bicoro::broadcast

pub fn broadcast<'a, I, OA, OB, A, B>(
    first: Coroutine<'a, I, OA, A>,
    second: Coroutine<'a, I, OB, B>
) -> Coroutine<'a, I, UnicastSelect<OA, OB>, DispatchResult<'a, I, I, OA, OB, A, B>>where
    I: Clone,
    A: Send,
    B: Send,
    OA: Send,
    OB: Send,

Sends inputs to both coroutines, and will emit outputs together

This is a more generic form of dispatch in which we want inputs send to both routines always