Add `Offset()` expression (BE + FE) (Part 1) (#41346)

* Fix add-alias-info matching for nominal field literal refs

* Minor cleanup

* Minimize diff

* A bit more cleanup

* Cumulative aggregations w/ multiple breakouts should reset counts (#2862)

* Update dox

* Do the nesting FIRST before adding alias info.

* Remove unused

* FE for Offset()

* Cleanup stray code

* Prettier

* Kondo

* Test fixes 

* Better error message when no breakout

* Support offset as an expression with no breakouts. Still require an ORDER BY tho.

* Fix most stuff

* Hack city??????

* Revert nest-query changes and disable the offset-no-breakout test for now.

* Appease TypeScript

* Test fix 

* Oracle & MySQL test fixes

* Test fixes 

* Remove maxWorkers for FE unit tests