Merge "Move the QrCodeGenerator from Settings to SettingsLib for Wifi and BT" am: e0939b12a8

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2109044

Change-Id: I5464b06ba415f26b213b600aa456ae3497c5601a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>