test

Add common resample code to stcal. #2108

Job	Run time
check / Load tox environments	4s
test / Load tox environments	4s
test_downstream / Load tox environments	7s
check / check-style (ubuntu-latest)	38s
check / check-types (ubuntu-latest)	1m 22s
check / check-build (ubuntu-latest)	53s
test / py310-oldestdeps-cov-xdist (ubuntu-latest)	2m 8s
test / py310-xdist (ubuntu-latest)	1m 30s
test / py311-xdist (ubuntu-latest)	1m 24s
test / py312-cov-xdist (ubuntu-latest)	2m 28s
test / py311-xdist (macos-latest)	1m 48s
test_downstream / py311-jwst-cov-xdist (ubuntu-latest)	30m 9s
test_downstream / py311-romancal-cov-xdist (ubuntu-latest)	4m 43s
	47m 18s

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