refactor(tests): split up test suites, update docs #918

Job	Run time
build-splicer (ubuntu-latest)	10s
lint	1m 2s
build-splicer (windows-latest)	12s
build (debug)	9s
build (release)	13s
build (weval)	8s
test-example	35s
test (23.10.0, windows-latest, debug)	8m 31s
test (23.10.0, ubuntu-latest, release)	6m 2s
test (23.10.0, windows-latest, weval)	13m 52s
test (23.10.0, ubuntu-latest, weval)	9m 8s
test (23.10.0, ubuntu-latest, debug)	6m 53s
test (23.10.0, macos-latest, release)	5m 56s
test (23.10.0, windows-latest, release)	7m 2s
test (23.10.0, macos-latest, debug)	5m 10s
test (23.10.0, macos-latest, weval)	7m 51s
	1h 12m 54s

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