Connect datadog browser logs, RUM, and APM traces

[timotheeg]

We have some left over problems with react, most notably the infamous "network error", that seems to bring the browser into a broken state where submitting a form can never work. See datadog log view here

When identifying a log entry, we can see browser logs in context (multiple browser log from the same user - managed thanks to a datadog session id), but we are not able to see browser and server logs from the same person in a unified view. so we cannot tell if some of the API calls succeeded before, or start succeeding again later for the user.

Ideally, we want to be able to see logs in a unified way.

Potential doc to check:

• Connect RUM and Traces
• Connect Logs and Traces (already done, but maybe there's linked documentation)
• Monitor JavaScript console logs and user activity with Datadog