Migrate to cargo_embargo. am: 7c80a348c1 am: f82026a16a

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

Change-Id: I8057bb2a16bab8d618b93f25dc2a7993039947b5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>