feat(rust): Adds Fuchsia Rust extractor to release (#4634)
feat(rust): Adds Fuchsia Rust extractor to release (#4634)

Adds the Fuchsia Rust extractor binary to the regular Kythe release.
This allows us (Fuchsia engs) to just grab a new Kythe binary release
and reuse in Fuchsia buildbots.

Issue: 4606
kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe