Merge "pdl: Implement c++ backend generator" am: b315d83f

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2496096



Change-Id: Ib9c7c09d737ac0e9a37215116a5630881d21376d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>