Fairblock rust

crates contains generated clients for keyshare, pep modules.

bin provides an example of how to use the crates.

Instructions to update

1. Replace the files in the proto/fairyring directory.
2. Inside the proto directory, run buf generate.
3. In fairblock-proto/src/prost/fairyring.keyshare.rs add the grpc feature.

#[cfg(feature = "grpc")]
include!("fairyring.keyshare.tonic.rs");

4. In fairblock-proto/src/prost/fairyring.pep.rs add the grpc feature.

#[cfg(feature = "grpc")]
include!("fairyring.pep.tonic.rs");

5. Run the tests in bin to see if they pass.