Add romanisim to downstream #17

Job	Run time
environment	1s
crds_contexts / retrieve latest CRDS contexts	5s
astropy / Load tox environments	7s
third-party / Load tox environments	5s
get_romanism_data / download_webbpsf_data / download and cache WebbPSF data	11s
third-party / ndcube (ubuntu-latest)	1m 10s
third-party / dkist (ubuntu-latest)	3m 3s
romancal / Load tox environments	17s
jwst / Load tox environments	3s
astropy / specutils (ubuntu-latest)	1m 55s
get_romanism_data / combine_data_cache	6s
jwst / py311-test-jwst-cov-xdist (ubuntu-latest)	6m 10s
romanisim_data_cache / retrieve latest data cache key	8s
romancal / py311-test-romancal-cov-xdist (ubuntu-latest)	3m 18s
romancal / py311-test-romanisim-cov-xdist (ubuntu-latest)	2m 11s
romanisim / Load tox environments	7s
romanisim / py311-test-romanisim-cov-xdist (ubuntu-latest)	1m 44s
	20m 41s

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