[ENH] implement one-way ANOVA at group level to compare groups #1035

Job	Run time
tests (system, moae, ubuntu-latest, R2023b)	24m 41s
tests (system, moae, macos-13, R2023b)	35m 50s
tests (system, facerep, ubuntu-latest, R2023b)	36m 54s
tests (system, facerep, macos-13, R2023b)	43m 34s
tests (system, fmriprep, ubuntu-latest, R2023b)	8m 15s
tests (system, fmriprep, macos-13, R2023b)	11m 20s
tests (system, ubuntu-latest, R2023b, bms)	17m 19s
tests (unit, ubuntu-latest, R2023b, fast)	7m 44s
tests (unit, macos-13, R2023b, fast)	16m 15s
tests (unit, ubuntu-latest, R2023b, slow)	14m 52s
tests (unit, macos-13, R2023b, slow)	21m 6s
tests (unit, macos-13, R2023b, fast)	14m 36s
	4h 12m 26s

Provide feedback