Migrate to cargo_embargo. am: 7c80a348c1

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/foreign-types-shared/+/2822240

Change-Id: I5822c5c53fa5fc07981598fd7e528c5ea6a54425
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>