[BOT.2] Create a coordinator and stats provider to provide tether stats am: d50f53b58a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11818539

Change-Id: Ic87b80f2856282e30fbba93a85cdfd3e8edb9fad
tree: 1ed4bf0eadb012014d1946a1ec7ea6881db9f087
  1. Tethering/