Add hack/sync-governance-api.sh to re-vendor the AI Governance Policy API
spec from the private docker/governor-services repo. The vendored copy at
content/reference/api/ai-governance/api.yaml is a verbatim copy of upstream,
so the script fetches it via gh (using the caller's own auth, no repo
secrets) and prints a diff summary for review. Mirrors the existing
hack/sync-cli-docs.sh convention.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>
