Port play-scala-websocket-example to Akka Typed

[dwijnand]

No description provided.

[ignasi35]

I think stopping needs fixing. The rest LGTM

[ignasi35]

thansk @dwijnand

[octonato]

Hmm, I was in the middle of a review and then this got merged

[octonato]

What you mean by "is self a child"? A child from whom?

I would just write it as follows:

Suggested change

	termination.foreach((_: Done) => context.stop(context.self)) // XXX: is self a child?
	termination.foreach(_ => context.stop(context.self))

[dwijnand]

I think context.stop doesn't work for self, thus the comment. (I'm not sure how to replace this bit.)

And I like the type annotation on the parameter to make sure I'm not discarding something useful, like a Boolean or something.

[octonato]

we can remove the need to pass a Materializer, an ExecutionContext and Scheduler altogether. ActorContext should give us everything.

[dwijnand]

Followed up in #64.