Add Media.net bidder

[kmjennison]

No description provided.

[codecov]

Codecov Report

Merging #46 (3531a72) into master (5312703) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #46   +/-   ##
=======================================
  Coverage   96.75%   96.75%           
=======================================
  Files          31       31           
  Lines         677      677           
  Branches      146      146           
=======================================
  Hits          655      655           
  Misses         21       21           
  Partials        1        1           

Impacted Files	Coverage Δ
src/providers/prebid/prebidBidder.js	95.65% <ø> (ø)

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