tests and coverage with matlab #286

Job	Run time
tests_matlab (macos-13, R2023b)	1s
tests_matlab (windows-latest, R2023b)	3m 45s
tests_matlab (ubuntu-latest, R2023b)	2m 10s
tests_matlab (ubuntu-latest, R2021a)	1m 40s
tests_matlab (windows-latest, R2021a)	3m 59s
tests_matlab (macos-13, R2021a)	1s
tests_matlab (macos-14, R2023b)	2m 18s
	13m 54s

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