refactor(tests): split up test suites, update docs #906

Job	Run time
lint	48s
build-splicer (windows-latest)	12s
build-splicer (ubuntu-latest)	6s
build (release)	7s
build (debug)	7s
build (weval)	7s
test-example	35s
test (23.10.0, ubuntu-latest, release)	6m 13s
test (23.10.0, ubuntu-latest, weval)	8m 50s
test (23.10.0, ubuntu-latest, debug)	7m 2s
test (23.10.0, macos-latest, weval)	13m 57s
test (23.10.0, windows-latest, weval)	12m 16s
test (23.10.0, windows-latest, debug)	8m 44s
test (23.10.0, windows-latest, release)	7m 23s
test (23.10.0, macos-latest, release)	4m 13s
test (23.10.0, macos-latest, debug)	9m 22s
	1h 20m 2s

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