feature: bring back action runners #42434

Job	Run time
Ensure no files with CRLF line endings are committed to the repo	4s
Bootstrap with OCaml 4.02 (ubuntu-latest)	3m 27s
Bootstrap with OCaml 5.4 (ubuntu-latest)	1m 21s
Documentation	57s
Format	1m 37s
Tests (Nix) (ubuntu-latest)	8m 59s
Bootstrap with OxCaml (ubuntu-latest)	18m 14s
Bootstrap with OCaml 5.4 (macos-latest)	2m 43s
Bootstrap with OCaml 4.14 (ubuntu-latest)	1m 35s
Bootstrap on Cygwin	3m 54s
Test that the utop dev tool can be built and run	12m 56s
Build (opam)	0s
Rocq Tests (native)	9m 55s
Wasm_of_ocaml Tests	7m 2s
Create local opam switch (macos-latest, 5)	10m 3s
OxCaml Tests (opam)	36m 9s
Create local opam switch (ubuntu-latest, 5)	8m 38s
Build microbenchmarks	1m 58s
OxCaml Tests (Nix)	40m 53s
Rocq Tests	7m 39s
	2h 58m 4s

Provide feedback