refactor(tests): split up test suites, update docs #912

Job	Run time
build-splicer (windows-latest)	14s
build-splicer (ubuntu-latest)	7s
lint	51s
build (weval)	8s
build (debug)	14s
build (release)	7s
test-example	35s
test (23.10.0, ubuntu-latest, release)	6m 15s
test (23.10.0, windows-latest, weval)	12m 33s
test (23.10.0, windows-latest, debug)	8m 33s
test (23.10.0, ubuntu-latest, weval)	9m 11s
test (23.10.0, windows-latest, release)	7m 9s
test (23.10.0, ubuntu-latest, debug)	7m 0s
test (23.10.0, macos-latest, debug)	7m 49s
test (23.10.0, macos-latest, release)	6m 46s
test (23.10.0, macos-latest, weval)	14m 36s
	1h 22m 8s

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