Implement batch_all and update Utility pallet for weight refunds (#7188)

* implement batch_all

* bump version

* updates

* Better weight story for utility

* small fixes

* weights

* assert_noop_ignore_postinfo doesnt make sense

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>