refactor(tests): split up test suites, update docs #900

Job	Run time
build-splicer (ubuntu-latest)	5s
lint	55s
build-splicer (windows-latest)	19s
build (weval)	14s
build (release)	7s
build (debug)	7s
test-example	37s
test (23.10.0, ubuntu-latest, release)	6m 2s
test (23.10.0, windows-latest, debug)	8m 38s
test (23.10.0, ubuntu-latest, debug)	7m 1s
test (23.10.0, macos-latest, debug)	7m 53s
test (23.10.0, ubuntu-latest, weval)	8m 54s
test (23.10.0, macos-latest, weval)	7m 31s
test (23.10.0, windows-latest, release)	7m 24s
test (23.10.0, macos-latest, release)	5m 48s
test (23.10.0, windows-latest, weval)	12m 26s
	1h 14m 1s

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