Deprecated Repository

[jpobst]

Note that the GPS/FB/MLKit packages that were previously built and released from this repository have been moved to the https://github.com/xamarin/AndroidX repository (which will eventually be moved to the dotnet organization with a more generic name).

This was done to simplify maintenance and to reduce circular dependencies between the two repositories which should lead to fewer NuGet version conflict issues.

All packages have been moved, no packages have been obsoleted or dropped as part of this effort.