add Cargo.lock to freeze dependencies
add Cargo.lock to freeze dependencies

jessiex/shadowsocks-rust,shadowsocks/shadowsocks-rust,shadowsocks/shadowsocks-rust,shadowsocks/shadowsocks-rust,cch123/shadowsocks-rust,shadowsocks/shadowsocks-rust,cch123/shadowsocks-rust,zonyitoo/shadowsocks-rust,jessiex/shadowsocks-rust