Unify Row hash and hash implementation (#4924)

* v1 implementation

* accumulator time fix

* resolve linter errors

* remove unnecessary changes

* minor changes

* add test

* remove row support for no grouping

* fix ci bug

* minor changes, rename

* Refactor Part 1

* simplify code

* readd arrow row converter

* minor changes

* simplify code

* change loop order

* Refactor Part 2

* Add comment

* Remove unnecessary variable, improve comments, try triggering CI

* address reviews

Co-authored-by: Mehmet Ozan Kabak <ozankabak@gmail.com>