Go pl adapter test

[wojciech-bialy-wpm]

🔧 Type of changes

• new bid adapter

✨ What's the context?

Change sspbc adapter (vendor 676) to gopl adapter (690). Leave sspbc as alias for legacy support.
This a part of sspbc-to-gopl switch acroess Prebid environment see
prebid/prebid-server#4888
prebid/prebid.github.io#6667
prebid/Prebid.js#15360

🧠 Rationale behind the change

We are sunsetting Businessclick vendor (gvlid 676) in Spentember 2026

🔎 New Bid Adapter Checklist

• verify email contact works
• NO fully dynamic hostnames
• geographic host parameters are NOT required
• direct use of HTTP is prohibited - implement an existing Bidder interface that will do all the job
• if the ORTB is just forwarded to the endpoint, use the generic adapter - define the new adapter as the alias of the generic adapter
• cover an adapter configuration with an integration test

🧪 Test plan

We have testen changes in our won PRebidserver/Java

🏎 Quality check

• Are your changes following our code style guidelines?
• Does your test coverage exceed 90%? Current test coverage is 90.0% for Branches, and 100% for Instructions/Lines?Methods