New adapter Nuba (#6495)

* feature/nuba-bidder

* Apply suggestion from @muuki88

* Nuba adapter: Enable pbs

---------

Co-authored-by: Muki Seiler <muuki88@users.noreply.github.com>

Author: nuba-io

dev-docs/bidders/nuba.md

@@ -16,7 +16,7 @@ media_types: banner, video, native
 multiformat_supported: will-bid-on-one
 userIds: all
 pbjs: true
-pbs: false
+pbs: true
 pbs_app_supported: true
 safeframes_ok: true
 sidebarType: 1