Add metadata files for same-file. am: 55919c3328 am: 5d60fdc70d am: e4da018dea

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/same-file/+/1621143

Change-Id: I1873f76f7e0353e092014147f7d28798c1c53e81