Basic client ops wrapping java client

Split into multiple modules

Race condition when interrupting `Queue#take` can cause items to disappear

ZStreams buffer(1) is buffering 2.

improved `Queue` shutdown functionality

ZScheduler parks+unparks workers too frequently

Can Fiber(Runtime) and Promise be merged?

Handling errors allows recovering from defects

Scala Native `WeakConcurrentBag` NPE when forking 10K fibers

Add tests for `ZStreamAspect`