PDL: add basic support for generating Rust code am: 5fa28508 am: 206b320e...

PDL: add basic support for generating Rust code am: 5fa28508 am: 206b320e am: 20c82ae4 am: ad14b4c3

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2063813



Change-Id: I239cb321e280976e35159e739a22754a4b463b32
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>