This endpoint returns a list of Bidders supported by Prebid Server.
These are the core values allowed to be used as request.imp[i].ext.{bidder}
keys in Auction requests.
For detailed info about a specific Bidder, use /info/bidders/{bidderName}
This endpoint returns JSON like:
[
"appnexus",
"audienceNetwork",
"pubmatic",
"rubicon",
"other-bidders-here"
]