feat: add make-install-plan utility #2918

Job	Run time
cabal	47s
runghc	53s
nix-build	4m 26s
cabal-doExactConfig	1m 2s
multi-target	1m 27s
shellFor-hoogle	47s
shellFor-multiple-package	49s
shellFor-not-depends	14s
shellFor-single-package	15s
tests-benchmarks	7s
unit-tests	14s
build-extra-hackages	38s
docs	1h 12m 1s
hix	1h 2m 40s
hydra-ifdLevel-0-and-1	4m 25s
hydra-ifdLevel-2	15m 54s
maintainer-scripts	13s
plan-extra-hackages	7s
check-materialization-concurrency	19s
check-path-support	11s
closure-size	3s
haskell-nix-roots-do-not-require-IFDs	52m 30s
hydra-ifdLevel-3	30m 18s
hydra-without-remote-builders-ghc966	43s
update-docs	6s
hix-cabal	4m 38s
hydra-without-remote-builders-ghc9101	2m 11s
nix-tools	52s
	4h 18m 50s

Provide feedback