Add contrib groupnorm #22125

Job	Run time
cancel	4s
Check if image exists in registry	5s
licensing	8m 18s
linux (ubuntu-20.04, debug)	13m 9s
linux (ubuntu-20.04, release)	10m 34s
linux (ubuntu-20.04, codecov)	12m 4s
misspell	15s
pyflakes	5m 22s
linux-fpga (ubuntu-20.04, debug)	43m 20s
Build image	0s
Build SLES image	0s
cppcheck	1h 0m 33s
format	5m 26s
tidy	9m 19s
sles	5m 37s
	2h 54m 6s

Provide feedback