perf: benchmarking code improvements (#630)

* adds benchmarking code

* wip

* pull benchmarks

* adds more info to readme

* benchmark improvements

* no extra logging

* fix

* improvements

* fix

* changes

* lint fix

* initial version of pr-pull report

* fixes

* fix

* fix

* fix

* fix

* fix

* report improvements

* fix

* fix

* wip: unifying benchmark scripts

* more benchmark improvements

* updates to benchmark

* cleanup

* fixes

* fix