Move `sameError` to `fs-sim-test` #257

Job	Run time
stylish-haskell (9.6.4, 3.10.3.0, ubuntu-latest)	2m 35s
build (8.10.7, 3.10.3.0, ubuntu-latest)	2m 8s
cabal-fmt (9.6.4, 3.10.3.0, ubuntu-latest)	2m 33s
build (8.10.7, 3.10.3.0, windows-latest)	3m 34s
cabal-check (9.6.4, 3.10.3.0, ubuntu-latest)	2m 19s
build (8.10.7, 3.10.3.0, macOS-13)	3m 15s
build (9.2.8, 3.10.3.0, ubuntu-latest)	1m 58s
build (9.2.8, 3.10.3.0, windows-latest)	3m 22s
build (9.2.8, 3.10.3.0, macOS-13)	2m 55s
build (9.4.8, 3.10.3.0, ubuntu-latest)	2m 31s
build (9.4.8, 3.10.3.0, windows-latest)	3m 29s
build (9.4.8, 3.10.3.0, macOS-13)	5m 17s
build (9.6.4, 3.10.3.0, ubuntu-latest)	2m 47s
build (9.6.4, 3.10.3.0, windows-latest)	6m 29s
build (9.6.4, 3.10.3.0, macOS-13)	6m 34s
build (9.8.2, 3.10.3.0, ubuntu-latest)	1m 6s
build (9.8.2, 3.10.3.0, windows-latest)	3m 11s
build (9.8.2, 3.10.3.0, macOS-13)	7m 26s
	1h 3m 29s

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