move middleware to their own projects

[CodisRedding]

I'd be happy to start moving the remaining built-in middleware functions to their own projects and add links from readme since some of these are not mentioned. Let me know what you think.

correlate json logger messageDomain package

[borela]

It would be interesting to have separate npm packages for the middlewares but still have a monorepo as it would be easier to find breaking changes or bugs. An example of that is babel.

[mateodelnorte]

I'm all for it. This will have to be part of a larger, breaking set of changes we'll need to start off at 3.0.0.

Happy to start working on this and other large changes on a new 3.0.0-pre branch. That work for you?

[patrickleet]

There is now a servicebus org for this