Enable zstd compression

[akiradeveloper]

Tonic 0.11 implements zstd support. How about introduce zstd to lolraft?

[akiradeveloper]

I think we don't need to add anything at all.

We can use zstd compression by adding some modification to the test code.

Server

let raft_svc = lolraft::raft_service::new(node);

Add

        .send_compressed(CompressionEncoding::Gzip)
        .accept_compressed(CompressionEncoding::Gzip);

Client

impl Client {
    pub fn new(conn: Channel) -> Self {
        let cli = RaftClient::new(conn);

Add

        .send_compressed(CompressionEncoding::Gzip)
        .accept_compressed(CompressionEncoding::Gzip);

[akiradeveloper]

done.