[Performance] Implement back-pressure

[metcoder95]

          Hey 👋 

Thanks for the feedback.

I think that should be doable, so far we have two things here, we can start by extending the options also to allow configure split2 with the args maxLength and skipOverflow so the behaviour is customizable.

The second one is that the current implementation is quite basic, and does not implement backpressure, which can be implemented as further enhancement.

Originally posted by @metcoder95 in #34 (comment)