[ENH] implement one-way ANOVA at group level to compare groups #1036

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	25m 24s
tests (system, moae, macos-13, R2023b)	44m 20s
tests (system, facerep, ubuntu-latest, R2023b)	45m 40s
tests (system, facerep, macos-13, R2023b)	56m 35s
tests (system, fmriprep, ubuntu-latest, R2023b)	11m 36s
tests (system, fmriprep, macos-13, R2023b)	15m 32s
tests (system, ubuntu-latest, R2023b, bms)	17m 51s
tests (unit, ubuntu-latest, R2023b, fast)	10m 1s
tests (unit, macos-13, R2023b, fast)	16m 51s
tests (unit, ubuntu-latest, R2023b, slow)	17m 16s
tests (unit, macos-13, R2023b, slow)	21m 36s
tests (unit, macos-13, R2023b, fast)	17m 24s
	5h 0m 6s

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