refactor(tests): split up test suites, update docs #901

Job	Run time
build-splicer (windows-latest)	10s
lint	50s
build-splicer (ubuntu-latest)	6s
build (release)	13s
build (weval)	8s
build (debug)	8s
test-example	39s
test (23.10.0, ubuntu-latest, release)	6m 10s
test (23.10.0, macos-latest, weval)	7m 20s
test (23.10.0, windows-latest, debug)	7m 25s
test (23.10.0, macos-latest, debug)	7m 34s
test (23.10.0, macos-latest, release)	4m 6s
test (23.10.0, windows-latest, weval)	7m 25s
test (23.10.0, ubuntu-latest, weval)	7m 29s
test (23.10.0, windows-latest, release)	7m 9s
test (23.10.0, ubuntu-latest, debug)	7m 1s
	1h 3m 53s

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