Add cargo2android.json. am: 726422cd3e am: 7d69159d09 am: d7331983ed

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/configparser/+/2822375

Change-Id: Iacfe3c52fba315fde858ee911162cf345c9fdbf6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>