Function spawn_server

pub fn spawn_server(
    thread_name: &'static str,
    metrics_name: &'static str,
    socket: UdpSocket,
    keypair: &Keypair,
    packet_sender: Sender<PacketBatch>,
    exit: Arc<AtomicBool>,
    staked_nodes: Arc<RwLock<StakedNodes>>,
    quic_server_params: QuicServerParams,
) -> Result<SpawnServerResult, QuicServerError>