Added coroutines version of roxie

[dragossusi]

Updated the code to create rxjava2 version and coroutines version

Both can be used in the same project(check sample)

I didn't check unit tests, but the sample works.

May need maven-publish configuration for publishing the new artifacts.

[michaelcarrano]

Thank you for this contribution, will need to spend some time reviewing it.

Hopefully, I will have some time later this week to start to look at the changes. I was on PTO last week when this was submitted.

[michaelcarrano]

Just to update those following this PR - @dragossusi has joined the WW team so we'll be collaborating/discussing this internally.

[dragossusi]

We should migrate from ConflatedBroadcastChannel to SharedFlow