refactor(tests): split up test suites, update docs #907

Job	Run time
lint	46s
build-splicer (windows-latest)	11s
build-splicer (ubuntu-latest)	6s
build (debug)	12s
build (weval)	13s
build (release)	14s
test-example	45s
test (23.10.0, ubuntu-latest, weval)	9m 5s
test (23.10.0, windows-latest, debug)	8m 42s
test (23.10.0, windows-latest, weval)	12m 42s
test (23.10.0, ubuntu-latest, release)	6m 11s
test (23.10.0, windows-latest, release)	7m 42s
test (23.10.0, ubuntu-latest, debug)	6m 57s
test (23.10.0, macos-latest, release)	4m 43s
test (23.10.0, macos-latest, debug)	8m 0s
test (23.10.0, macos-latest, weval)	12m 49s
	1h 19m 18s

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