Cats Effect: Stream & Sink

[jdegoes]

Introduce an effect-polymorphic class atop ZStream & ZSink, with a default implementation for any Cats Effect data type (Cats IO, Monix Task, etc.).

package scalaz.zio.interop

trait Stream[F[_], +A] {
  ...
}
object Stream {
  ...
}

trait Sink[F[_], A, ...] { ... }
object Sink { ... }

The methods will all delegate to ZIO ZStream and ZSink, but they will take the ZIO effects returned by ZStream/ZSink methods and lift it into any effect F[_] that is suitable equipped.

[NeQuissimus]

Once you have this, we should be able to bring in FS2 pretty easily, no? Just today had a situation where I needed to interop with FS2...

[timo-schmid]

This looks super interesting, i'll try to contribute it!

[timo-schmid]

I've mostly copied the ideas from zio/zio#791 - feel free to let me know if I'm on the right track, or if I misunderstood anything!