Setup Android.bp and dependencies to build in tree

The `soong` directory contains files which were supposed to be
auto-generated by Gradle plugins. Please refer to README.md for details
to setup Firebase, root CA certificate, etc.

Bug: 178557042
Test: mmm packages/apps/Car/DebuggingRestrictionController
Change-Id: I29fb56a744b2fa009f9690c12230e8d453693eba
21 files changed