Move `sameError` to `fs-sim-test` #265

Job	Run time
build (8.10.7, 3.10.3.0, ubuntu-latest)	1m 57s
build (8.10.7, 3.10.3.0, windows-latest)	3m 47s
cabal-fmt (9.6.4, 3.10.3.0, ubuntu-latest)	2m 33s
cabal-check (9.6.4, 3.10.3.0, ubuntu-latest)	2m 21s
build (8.10.7, 3.10.3.0, macOS-13)	3m 42s
stylish-haskell (9.6.4, 3.10.3.0, ubuntu-latest)	2m 30s
build (9.2.8, 3.10.3.0, ubuntu-latest)	2m 3s
build (9.2.8, 3.10.3.0, windows-latest)	3m 58s
build (9.2.8, 3.10.3.0, macOS-13)	2m 54s
build (9.4.8, 3.10.3.0, ubuntu-latest)	2m 31s
build (9.4.8, 3.10.3.0, windows-latest)	4m 24s
build (9.4.8, 3.10.3.0, macOS-13)	4m 55s
build (9.6.4, 3.10.3.0, ubuntu-latest)	2m 50s
build (9.6.4, 3.10.3.0, windows-latest)	4m 58s
build (9.6.4, 3.10.3.0, macOS-13)	5m 9s
build (9.8.2, 3.10.3.0, ubuntu-latest)	1m 10s
build (9.8.2, 3.10.3.0, windows-latest)	4m 47s
build (9.8.2, 3.10.3.0, macOS-13)	8m 5s
	1h 4m 34s

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