Fetch Paginated Records - Firebase function

I know you must be wondering why the hell on this earth, firebase made it super difficult to page through the records.

Trust me, I share your pain.

And I am sure you have already gone through this weirdo guy video on Google documentation page:

https://www.youtube.com/watch?v=poqTHxtDXwU

But even after that it does not make sense and I totally get that.

Because it happened to me too.

Reading through this confusing documentation several times. So I created this modular function to help you with paginated results.