Implement ma.*_like functions #9378
Merged
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Implements
ones_like,zeros_likeandempty_likewithindask.array.ma. I also looked atfull_like, but that does not currently exist innumpy.ma, so I left it out for simplicity.Note that until recently (numpy/numpy#19899),
ones_likeandzeros_likewere missing fromnumpy.ma.core.__all__and therefore did not appear in thenumpy.manamespace. So I am usingnumpy.ma.coredirectly.pre-commit run --all-files