attestation: add initial attestation helpers, integrate into `brew install`#17049

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MikeMcQuaid merged 15 commits intoHomebrew:masterfrom trail-of-forks:ww/attestation

Apr 12, 2024

+395-54

Commits on Apr 10, 2024

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Commits on Apr 12, 2024

test: add Bottle#filename test
woodruffw
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