Migrate to cargo_embargo. am: 88037d1910 am: 527dec1d25 am: 30129f13a7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/bitreader/+/2796197

Change-Id: If46366c0fc9191ad5896cc1db061d77b4b9a4737
Signed-off-by: Automerger Merge Worker <[email protected]>