add a barely working flux model #942

Job	Run time
publish-docs	0s
Build Wheel	17s
lint	2m 50s
test-gpu	10m 33s
test-non-gpu (3.10, ubuntu-latest)	2m 4s
type-check	9m 10s
test-non-gpu (3.11, ubuntu-latest)	1m 47s
Smoketest (Conda, Python 3.10, ubuntu-latest)	6m 1s
Smoketest (Python 3.10, ubuntu-latest)	1m 29s
Smoketest (Python 3.10, windows-latest)	2m 9s
Smoketest (Conda, Python 3.10, windows-latest)	2m 20s
Smoketest (Python 3.10, m2-16gb)	31s
Smoketest (Conda, Python 3.10, m2-16gb)	1m 41s
Smoketest (Python 3.11, ubuntu-latest)	1m 27s
Smoketest (Conda, Python 3.11, ubuntu-latest)	1m 43s
Smoketest (Conda, Python 3.11, windows-latest)	2m 16s
Smoketest (Python 3.11, windows-latest)	1m 40s
Smoketest (Python 3.11, m2-16gb)	24s
Smoketest (Conda, Python 3.11, m2-16gb)	1m 49s
	50m 11s

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