Migrate to cargo_embargo. am: e575ba77a4 am: 96c4f67105 am: 5a3f7bc23c

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/argh_derive/+/2796278

Change-Id: I94cc9c12627af5414767fd7594758fedc94843ef
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>