Add support for masked quantities, angles, and coordinates #1087

Job	Run time
setup	3s
wheel_building / Build source and wheel distribution	2m 22s
asdf-schemas / Load tox environments	6s
core / Load tox environments	4s
core / py310-test-devdeps-parallel-cov (ubuntu-latest)	1m 40s
core / py311-test-devdeps-parallel-cov (ubuntu-latest)	4m 11s
core / py312-test-devdeps-parallel-cov (ubuntu-latest)	5m 4s
asdf-schemas / asdf (ubuntu-latest)	2m 16s
asdf-schemas / asdf-standard (ubuntu-latest)	1m 3s
asdf-schemas / asdf-transform-schemas (ubuntu-latest)	1m 31s
asdf-schemas / asdf-coordinates-schemas (ubuntu-latest)	2m 57s
test	0s
dev	0s
	21m 17s

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