[web-adv] two Google Ads explainers

Hello W3C Web Advertising Group,

Google Ads recently published

   - The Augury API to simplify the implementation of TURTLEDOVE
   https://github.com/google/ads-privacy/tree/master/proposals/augury.
   - The Scaup API for similar audience, aka lookalike targeting
   https://github.com/google/ads-privacy/tree/master/proposals/scaup.

We’d be happy to begin conversations with the broader group about these
proposals.

Thanks,

Gang Wang
Google Ads