Migrate 25 crates to monorepo. am: 33bab9581e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/either/+/3242590

Change-Id: Ibd2a681708a72f931b73e7a2f4f41c3ccbb7e552
Signed-off-by: Automerger Merge Worker <[email protected]>