Copy description from Cargo.toml to METADATA am: 7e07a03d09 am: 9c3e5e5243 am: 68230c8e57

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libsqlite3-sys/+/1456857

Change-Id: I84315134a457f6dd75363c80ed7d42c36cef881f