pkg: add argument to pkg lock to print perf stats #29551

Job	Run time
Build microbenchmarks	2m 11s
Coq 8.16.1	6m 22s
Build (macos-latest, 5.1.x)	2m 30s
Create local opam switch (macos-latest, 5)	4m 41s
Build (ubuntu-latest, 5.1.x)	1m 31s
Create local opam switch (macos-latest, 4.14)	4m 40s
Format	52s
Build (ocaml-variants.5.4.0+trunk, ubuntu-latest, true)	1m 15s
Documentation	57s
Create local opam switch (ubuntu-latest, 5)	4m 27s
Create local opam switch (ubuntu-latest, 4.14)	4m 21s
Build (4.14.x, ubuntu-latest, true)	1m 16s
Build monorepo benchmark docker image	3m 8s
Build (4.14.x, macos-latest, true)	2m 21s
Nix (macos-latest)	1m 57s
Build (5.1.x, macos-13, true)	3m 28s
Nix (ubuntu-latest)	45s
Wasm_of_ocaml	8m 19s
Build (ocaml-base-compiler.4.14.2,system-msvc, windows-latest)	9m 23s
Build (ocaml-base-compiler.5.1.1,system-mingw, windows-latest)	3m 4s
Build (4.08.x, ubuntu-latest, true)	1m 28s
Build (4.04.x, ubuntu-latest, true, true)	3m 48s
Build (4.02.x, ubuntu-latest, true)	3m 55s
	1h 16m 39s

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