Type of issue

Enhancement

Description

This is the Prebid.js side of prebid/prebid-server#3615 - see that issue for a full background.

In short, we're trying to get server-side details to our client-side analytics adapter and the PBS committee has approved a generic mechanism for doing so... it will return the ext.prebid.analyticstags object in the response. We would like for the pbsBidAdapter to look for this object and make it available to interested analytics adapters.

We should emit a new event for the server side analytics object being available, and only emit the event when the library is configured by the publisher to do so (the same configuration flag would enable ext.prebid.analytics.options.enableclientdetails: true in the pbs request) . Analytics adapters could then listen to that event.