Rivr thin adapter (prebid#3351)

* Rivr thin adapter (#5)

* RVR-2049 - change impression event

* RVR-2049 - fix user id value returned on creation of the cookie

* RVR-2049 - remove blockedCategories and browser properties from Auction object

* RVR-2060 - rewrite rendering detection for impression and click events

* RVR-2060 - rewrite tests for rendering detection for impression and click events

* RVR-2049 - send ad unit code in click event

* RVR-2049 - adapt tests for click event

* RVR-2072 - split impression detection depending on the ad server - DFP/none

* RVR-2056 - set creativeId in Auction -> received bids

* RVR-2056 - set bid.clearPrice to cmp

* RVR-2087 - extract trackAuctionInit implementation to rivraddon

* RVR-2087 - extract implementation to rivraddon WIP

* RVR-2087 - extract implementation to rivraddon

* RVR-2087 - extract implementation to rivraddon

* RVR-2087 - Update package-lock

* RVR-2087 - Add addons check

* Rivr Thin Adapter - part 2 (#6)

* RVR-2087 - Remove sendAuction call from ExpiringQueue

* RVR-2147 - Fix test failing on IE 11.0.0

* RVR-2087 - Remove ExpiringQueue