Function spawn_local 

pub async fn spawn_local<T: ThreadLocalActor>(
    args: T::Arguments,
    spawner: ThreadLocalActorSpawner,
) -> Result<(ActorRef<T::Msg>, JoinHandle<()>), SpawnErr>

Perform a background-spawn of an thread-local actor. This is a utility wrapper over thread_local::ThreadLocalActor::spawn which assumes the actor implementation implements Default.

• args - The arguments to start the actor
• spawner - The thread-local spawner (thread_local::ThreadLocalActorSpawner) used to spawn thread-local actors

Returns [Ok((ActorRef, JoinHandle<()>))] upon successful actor startup, [Err(SpawnErr)] otherwise