[ENH] implement one-way ANOVA at group level to compare groups #1042

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	11m 34s
tests (system, moae, macos-13, R2023b)	19m 1s
tests (system, facerep, ubuntu-latest, R2023b)	23m 33s
tests (system, facerep, macos-13, R2023b)	30m 13s
tests (system, fmriprep, ubuntu-latest, R2023b)	6m 26s
tests (system, fmriprep, macos-13, R2023b)	10m 18s
tests (system, ubuntu-latest, R2023b, bms)	12m 31s
tests (unit, ubuntu-latest, R2023b, fast)	7m 17s
tests (unit, macos-13, R2023b, fast)	11m 24s
tests (unit, ubuntu-latest, R2023b, slow)	15m 2s
tests (unit, macos-13, R2023b, slow)	21m 3s
tests (unit, macos-13, R2023b, fast)	14m 35s
	3h 2m 57s

Provide feedback