[ENH] implement one-way ANOVA at group level to compare groups #1038

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	24m 34s
tests (system, moae, macos-13, R2023b)	33m 58s
tests (system, facerep, ubuntu-latest, R2023b)	33m 59s
tests (system, facerep, macos-13, R2023b)	48m 5s
tests (system, fmriprep, ubuntu-latest, R2023b)	6m 46s
tests (system, fmriprep, macos-13, R2023b)	11m 15s
tests (system, ubuntu-latest, R2023b, bms)	17m 56s
tests (unit, ubuntu-latest, R2023b, fast)	8m 16s
tests (unit, macos-13, R2023b, fast)	12m 53s
tests (unit, ubuntu-latest, R2023b, slow)	15m 49s
tests (unit, macos-13, R2023b, slow)	20m 38s
tests (unit, macos-13, R2023b, fast)	13m 20s
	4h 7m 29s

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