docs: overhaul contributing and maintenance docs for end-of-year 2023#5038

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JoshuaKGoldberg merged 7 commits intomochajs:masterfrom JoshuaKGoldberg:overhaul-contributing-and-maintenance-docs

Dec 27, 2023

+514-362

Commits on Dec 2, 2023

Commits on Dec 5, 2023

Commits on Dec 12, 2023

Add 'I want to provide a PR' optional checkboxes
JoshuaKGoldberg
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Commits on Dec 27, 2023