refactor(tests): split up test suites, update docs #903

Job	Run time
build-splicer (windows-latest)	12s
build-splicer (ubuntu-latest)	6s
lint	54s
build (release)	7s
build (weval)	7s
build (debug)	7s
test-example	45s
test (23.10.0, ubuntu-latest, weval)	9m 3s
test (23.10.0, windows-latest, debug)	8m 44s
test (23.10.0, ubuntu-latest, release)	6m 16s
test (23.10.0, ubuntu-latest, debug)	6m 59s
test (23.10.0, windows-latest, weval)	12m 11s
test (23.10.0, macos-latest, weval)	8m 40s
test (23.10.0, windows-latest, release)	7m 24s
test (23.10.0, macos-latest, debug)	8m 6s
test (23.10.0, macos-latest, release)	7m 19s
	1h 17m 0s

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