vsprintf: Add cargo_embargo.json and Android.bp am: 3bcfb29906 am: 24950b1676 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/vsprintf/+/3248504 Change-Id: I984fb28218e9c2cb4a92ae09e51d2c27ef95feb3 Signed-off-by: Automerger Merge Worker <[email protected]>