Test

define a module for chunk grids, and a registry #6361

Job	Run time
py=3.13-upstream	22m 59s
doctests	1m 4s
os=ubuntu-latest, py=3.12, deps=optional	17m 21s
os=windows-latest, py=3.13, deps=optional	21m 51s
os=macos-latest, py=3.11, deps=optional	16m 0s
os=ubuntu-latest, py=3.11, deps=optional	16m 7s
os=ubuntu-latest, py=3.13, deps=optional	18m 25s
py=3.11-min_deps	18m 30s
os=ubuntu-latest, py=3.11, deps=minimal	15m 55s
os=ubuntu-latest, py=3.12, deps=minimal	15m 47s
os=windows-latest, py=3.11, deps=optional	23m 54s
os=ubuntu-latest, py=3.13, deps=minimal	14m 57s
os=macos-latest, py=3.13, deps=optional	14m 50s
Test complete	4s
	3h 37m 44s

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