Admin people pagination backend (#15687)

* limit and offset work upon hand exercise

* limit added

* add the test

* docstring is wrong make it not wrong

* fix namespace decl

* they were test bugs only

* stick that limit and offset in there

* Permissions imports

* make it work in dbs that are not just h2

* add limit test get

* needs integer

* juice the coverity lol

* just stick querying in the overall dealie

* tests pass

* add counter

* rip out the clauses

* not just if limited

* docstring misplaced

* more linting

* cool tests

* tests pass but lacking test lol

* group id works

* test works

* fix jeff nits

* break that api

* add test for count

* cypress works for some reason lol

* fix capitalizations

* admin people pagination frontend (#15821)

* admin people pagination frontend

* admin people pagination and search specs

* address review comments

* fix rebase

* address review comments

Co-authored-by: Alexander Lesnenko <alxnddr@users.noreply.github.com>