SCIM: implement Groups #3566

Job	Run time
build_and_test (3.11, 22.x, :lint:python:client:common:smoke:stubs:)	4m 37s
build_and_test (3.11, 22.x, :server-1-of-2:)	6m 2s
build_and_test (3.11, 22.x, :server-2-of-2:)	11m 10s
build_and_test (3.11, 22.x, :gen-server:)	5m 46s
build_and_test (3.11, 22.x, :nbrowser-^[A-D]:)	11m 10s
build_and_test (3.11, 22.x, :nbrowser-^[E-L]:)	10m 1s
build_and_test (3.11, 22.x, :nbrowser-^[M-N]:)	11m 57s
build_and_test (3.11, 22.x, :nbrowser-^[O-R]:)	5m 9s
build_and_test (3.11, 22.x, :nbrowser-^[^A-R]:)	8m 22s
build_and_test (:lint:python:client:common:smoke:, 22.x, 3.10)	4m 51s
candidate	0s
	1h 19m 5s

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