ADVERTISEMENT SDK - Unity

Requirements: Want to create the Advertisement SDK that will support unity game engine with various ad formats(banner ads, interstitial ads, rewarded ads, Playable ads for both IOS as well as android).The ads will be custom ads(our campaign). There should be a way to track actionable analytics like overall ads revenue, eCPM, DAU, Ads ARPDAU, Impressions, Fill rate. Should have a manual/documentation of how to initialize the SDK and how to call the methods to show ads. Also there should be an option to skip interstitial ads after 5 sec. In rewarded video we need to track whether the user watched the full ad, then only grant him the reward. The Ads should be rotating means same ads should not come again and again