Implement out of band OAuth. #80
Merged
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Summary
This change adds out of band OAuth support to allow users to generate
OIDC tokens even if their current session does not support opening a
brower.
This works by reading/writing directly to the user's TTY, bypassing
stdin/stdout that is being captured by Git.
Big thanks to @benmoss for doing the initial leg-work here.
This change is dependent on sigstore/sigstore#514, so starting off as draft (even after this is submitted, we should double check the out-of-band flow - I was having trouble with the page redirects, though I was able to confirm that this works by nabbing the code from the devtools console).
Ticket Link
Fixes #20
Release Note