stole mailmap from sunpy #1858

Job	Run time
sdist_verify	18s
core / Load tox environments	5s
cron	0s
core / py313 (ubuntu-latest)	1m 13s
docs / Load tox environments	6s
test / Load tox environments	6s
test / py310-oldestdeps (ubuntu-latest)	1m 36s
test / py311 (windows-latest)	2m 16s
test / py312 (macos-latest)	1m 18s
docs / build_docs (ubuntu-latest)	1m 46s
publish	0s
notify	0s
	8m 44s

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