Migrate 25 crates to monorepo. am: e980d6d234

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/futures-util/+/3241330

Change-Id: I7b33d7cdd4abfc4e6e8ab8035efb2cadea86cef7
Signed-off-by: Automerger Merge Worker <[email protected]>