Add Ad-Related resource metadata

[tunetheweb]

See: https://source.chromium.org/chromium/chromium/src/+/main:docs/ad_tagging.md;l=1?q=file:ad_tagging&ss=chromium

This is available in Chrome DevTools in Canary (and CDP protocol):

Let's add to the summary column of httparchive.crawl.requests table.

[pmeenan]

I added it to the payload for now (along with preload and same-site). The summary processing in the agent looks like it was built when the summary fields were actually separate columns. If it is all just a JSON blob now I can go ahead and add it to the summary JSON.