Add Vinberg's algorithm #16628

Job	Run time
test (1.6, short, ubuntu-latest)	6m 7s
test (1.6, long, ubuntu-latest)	6m 7s
doctest (1.10, ubuntu-latest)	6m 6s
test (1.10, short, ubuntu-latest)	6m 5s
doctest (1.11-nightly, ubuntu-latest)	6m 11s
doctest (nightly, ubuntu-latest)	6m 7s
doctest (1.10, ubuntu-latest, depwarn=error)	6m 8s
test (1.10, long, ubuntu-latest)	6m 4s
doctest (1.10, macOS, RPTU)	6m 10s
test (1.11-nightly, short, ubuntu-latest)	6m 7s
test (1.11-nightly, long, ubuntu-latest)	6m 6s
test (nightly, short, ubuntu-latest)	6m 6s
test (nightly, long, ubuntu-latest)	6m 8s
test (1.10, short, ubuntu-latest, depwarn=error)	6m 6s
test (1.10, long, ubuntu-latest, depwarn=error)	6m 4s
test (1.10, short, macOS, RPTU)	6m 11s
test (1.10, long, macOS, RPTU)	6m 9s
test (1.10, book, ubuntu-latest)	6m 10s
	1h 50m 12s

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