Merge "pdl: Implement c++ backend generator" am: b315d83f am: b43bfffc am: 6b8c168f am: 0725fb5b am: 12a105f5

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



Change-Id: I08ba3a81191110a8e5154a648da18b45d138ceeb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>