RootCanal: Import CMakeLists.txt build files from emu-master-dev

Import all files remaining in external/qemu/android/bluetooth/rootcanal/
This will simplify RootCanal build modifications as there will no longer
be the need to create a topic.

Bug: 278951243
Test: ./android/rebuild.sh
Change-Id: I8661386b9abc9b412ff047a654d0ccfd41c568a4