Migrate 25 crates to monorepo. am: 25f233dce1

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/lz4_flex/+/3246714

Change-Id: I337e0a251e256cd2947c42911ef7690de369452a
Signed-off-by: Automerger Merge Worker <[email protected]>