microG: Display data being sent to Google in app

Let's start with device registration.

https://github.com/microg/GmsCore/blob/v0.2.22.212658/play-services-core/src/main/java/org/microg/gms/checkin/CheckinClient.java

makeRequest() has all the info.

Stuff like phoneInfo and deviceIdent are fake. So it does not have your real sim info or IMEI, and thus should be shown like that.