GPS-38: Sovrn adapter Fledge module integration

[ikagotso]

This is an attempt to do Sovrn Prebid.js adapter integration with prebid's Fledge (Protected Audience) Module.
We should send imp.ext.ae field, if fledge support is enabled.
Also we should return fledgeAuctionConfigs if we receive any.

[sejanick]

Is that really all we need to do for Fledge support? It seems pretty straightforward! Is there any context I should have in addition to this? If not, I'm happy to approve, as this seems good from what I understand.

Is there anyway we can possibly test this at all?

[ikagotso]

Is that really all we need to do for Fledge support? It seems pretty straightforward! Is there any context I should have in addition to this? If not, I'm happy to approve, as this seems good from what I understand.

Is there anyway we can possibly test this at all?

As Prebid.js is concerned, our adapter's part in this seems somewhat straightforward, agreed. (Other adapters I've checked do similar stuff). You can take a look at this doc about fledge support (this is a small one : https://docs.prebid.org/dev-docs/modules/fledgeForGpt.html)
Short summary:
Prebid should notify Blackbird that an imp is Fledge-eligible. Blackbird in it's own should notify dsps about it and must be eligible to receive auctionconfigs. So surely Blackbird changes are going to follow this PR and I am working on that right now.
Our flow diagram could help clarify some of this: https://authcore.atlassian.net/wiki/spaces/~63dc3368491b20ef64b9ae39/pages/2693237735425/Protected+Audience+API

Please lemme know if you have any more questions.

[ikagotso]

Is that really all we need to do for Fledge support? It seems pretty straightforward! Is there any context I should have in addition to this? If not, I'm happy to approve, as this seems good from what I understand.

Is there anyway we can possibly test this at all?

As for testing, I am not fully clarified on that yet.

[azaidisovrn]

@ikagotso, in the context of accessibility, how will the PAAPI tag have access to the returned bids and AuctionConfigs?