Add Document-Policy header

[righettod]

📅 Status information was captured on September 2023.

🌎 Support status

🗺 Spec status

📖 Sources & References

• https://wicg.github.io/document-policy/
• https://github.com/wicg/document-policy/blob/main/document-policy-explainer.md
• https://caniuse.com/document-policy

[righettod]

🚩 This spec is currently an Unofficial Draft that means : It is not a W3C Standard nor is it on the W3C Standards Track.

📍 In addition, I did not achieve to find a official list of policies supported in the spec of the GH repo.