No way to setUserId or setCustomData for reward videos

There is currently no way that I can find to setCustomData or setUserId to verify reward videos server side using the reward video ssv: https://developers.google.com/admob/android/rewarded-video-ssv

This is essential for reward videos to verify that the user actually completed the video reward, rather than just relying on a client side callback to reward the user.

The IAdRequest interface currently supports the following data:

interface IAdRequest {
  id?: AdUnitIDOption
  testDevices?: string[]
  childDirected?: boolean
  underAgeOfConsent?: boolean
}

Maybe allowing a customData object or a userId here that gets set using the setUserId or setCustomData functions would be the way to go?

For example:

document.addEventListener('deviceready', () => {
  admob.rewardVideo.load({
    id: {
      // replace with your ad unit IDs
      android: 'ca-app-pub-xxx/yyy',
      ios: 'ca-app-pub-xxx/zzz',
    },
    userId: '14239023',
    customData: {
        somethingElse: 'hello world'
    }
  }).then(() => admob.rewardVideo.show())
}, false)

[ratson]

@dodocodes @bardgr @nfacha @SeVeNDuS I have just released admob-plus-cordova@1.0.0-alpha.13 to support this. Please refer to https://admob-plus.github.io/docs/cordova/rewarded-ads-ssv/

[bardgr]

Hugely useful in order to support reward vids and increase revenue. Many thumbs up. Is it possible @ratson to have it in the next release?