Convert Ethservice into stream

[mattsse]

Currently we're ignoring internal events:

reth/crates/ethereum/engine/src/service.rs

Lines 73 to 85 in ba7aede

	impl<DB, Client> Future for EthService<DB, Client>
	where
	DB: Database + 'static,
	Client: HeadersClient + BodiesClient + Clone + Unpin + 'static,
	{
	type Output = Result<(), EthServiceError>;
	fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
	// Call poll on the inner orchestrator.
	let mut orchestrator = self.project().orchestrator;
	loop {
	match ready!(StreamExt::poll_next_unpin(&mut orchestrator, cx)) {
	Some(_event) => continue,

however some events can be useful for node event handling

blocked by #9575

TODO

• convert this into a stream that bubbles up the event

[mvares]

Hey @mattsse! #9575 has already been merged. Is this issue still blocked?

[mattsse]

hey @mvares this is unblocked now but we need this pr pretty soon, if you have the bandwidth for it please go ahead

[mvares]

@mattsse, should I drop the impl Future?

[mattsse]

yes

[mvares]

@mattsse, sorry about that. Right now, I haven't sufficient skills to this task. I'll try take other task more easy.

[mattsse]

all good!
if you dont find anything, please ping me on tg @mattsse

[junderw]

Please let me know what "bubbles up" means in this context. Thanks.