Surface win URL via SDK

[bretg]

Is your feature request related to a problem? Please describe.

One of our publishers wants to render without using the Prebid Universal Creative, but also to use Magnite's analytics system. To achieve this, they will need to invoke the analytics event in their rendering process. Prebid Server returns a field that contains the URL they need to hit:

seatbid[].bid[].ext.prebid.events.win

Describe the solution you'd like

We are asking for a way for the app to obtain this Prebid Server field from the SDK for each bid response. The app will be responsible for hitting the URL at the appropriate time.

[bretg]

Thanks for the enhancement, but this needs a docs update... how do app developers make use of this?

[bretg]

Sorry - I prematurely merged the original docs. Reverted. New PR prebid/prebid.github.io#4929 . Since the docs are waiting for release, will close the issue.