[ENH] implement one-way ANOVA at group level to compare groups #1046

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	24m 7s
tests (system, moae, macos-13, R2023b)	45m 54s
tests (system, facerep, ubuntu-latest, R2023b)	36m 10s
tests (system, facerep, macos-13, R2023b)	1h 0m 13s
tests (system, fmriprep, ubuntu-latest, R2023b)	6m 49s
tests (system, fmriprep, macos-13, R2023b)	13m 1s
tests (system, ubuntu-latest, R2023b, bms)	16m 47s
tests (unit, ubuntu-latest, R2023b, fast)	10m 4s
tests (unit, macos-13, R2023b, fast)	19m 9s
tests (unit, ubuntu-latest, R2023b, slow)	13m 16s
tests (unit, macos-13, R2023b, slow)	21m 12s
tests (unit, macos-13, R2023b, fast)	15m 0s
	4h 41m 42s

Provide feedback