Homebrew: add threat modeling

[woodruffw]

This adds models for 4 attacker scenarios, including their postures, mitigations, and outcomes.

CC @di and @haydentherapper for review 🙂

[di]

@woodruffw OK to merge here?

[woodruffw]

@woodruffw OK to merge here?

OK by me, I think @trishankatdatadog may have some feedback coming. But if you want to merge first, I can address his feedback in a follow-up.

[trishankatdatadog]

@woodruffw OK to merge here?

OK by me, I think @trishankatdatadog may have some feedback coming. But if you want to merge first, I can address his feedback in a follow-up.

LGTM, thanks, and yes, we can address other feedback later

[woodruffw]

Good to go now, @di!

[trevrosen]

Love it - thanks, @woodruffw!