Move `sameError` to `fs-sim-test` #256

Job	Run time
cabal-check (9.6.4, 3.10.3.0, ubuntu-latest)	2m 52s
cabal-fmt (9.6.4, 3.10.3.0, ubuntu-latest)	2m 34s
build (8.10.7, 3.10.3.0, ubuntu-latest)	2m 4s
stylish-haskell (9.6.4, 3.10.3.0, ubuntu-latest)	2m 28s
build (8.10.7, 3.10.3.0, windows-latest)	3m 47s
build (8.10.7, 3.10.3.0, macOS-13)	3m 33s
build (9.2.8, 3.10.3.0, ubuntu-latest)	2m 24s
build (9.2.8, 3.10.3.0, windows-latest)	3m 43s
build (9.2.8, 3.10.3.0, macOS-13)	3m 19s
build (9.4.8, 3.10.3.0, ubuntu-latest)	2m 35s
build (9.4.8, 3.10.3.0, windows-latest)	3m 48s
build (9.4.8, 3.10.3.0, macOS-13)	5m 20s
build (9.6.4, 3.10.3.0, ubuntu-latest)	2m 51s
build (9.6.4, 3.10.3.0, windows-latest)	3m 12s
build (9.6.4, 3.10.3.0, macOS-13)	4m 41s
build (9.8.2, 3.10.3.0, ubuntu-latest)	1m 7s
build (9.8.2, 3.10.3.0, windows-latest)	4m 53s
build (9.8.2, 3.10.3.0, macOS-13)	5m 18s
	1h 0m 29s

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