[ENH] implement one-way ANOVA at group level to compare groups #1039

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	25m 41s
tests (system, moae, macos-13, R2023b)	34m 54s
tests (system, facerep, ubuntu-latest, R2023b)	37m 47s
tests (system, facerep, macos-13, R2023b)	45m 19s
tests (system, fmriprep, ubuntu-latest, R2023b)	9m 0s
tests (system, fmriprep, macos-13, R2023b)	14m 43s
tests (system, ubuntu-latest, R2023b, bms)	20m 18s
tests (unit, ubuntu-latest, R2023b, fast)	8m 4s
tests (unit, macos-13, R2023b, fast)	14m 52s
tests (unit, ubuntu-latest, R2023b, slow)	14m 23s
tests (unit, macos-13, R2023b, slow)	19m 50s
tests (unit, macos-13, R2023b, fast)	12m 4s
	4h 16m 55s

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