[ENH] implement one-way ANOVA at group level to compare groups #1043

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	12m 3s
tests (system, moae, macos-13, R2023b)	15m 0s
tests (system, facerep, ubuntu-latest, R2023b)	26m 31s
tests (system, facerep, macos-13, R2023b)	31m 24s
tests (system, fmriprep, ubuntu-latest, R2023b)	9m 12s
tests (system, fmriprep, macos-13, R2023b)	10m 53s
tests (system, ubuntu-latest, R2023b, bms)	10m 57s
tests (unit, ubuntu-latest, R2023b, fast)	9m 1s
tests (unit, macos-13, R2023b, fast)	12m 27s
tests (unit, ubuntu-latest, R2023b, slow)	15m 52s
tests (unit, macos-13, R2023b, slow)	19m 44s
tests (unit, macos-13, R2023b, fast)	14m 46s
	3h 7m 50s

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