Function gsp_client_send 

#[unsafe(no_mangle)]
pub extern "C" fn gsp_client_send(
    ch: i32,
    nh: i32,
    mh: i32,
    target: u32,
    signal_type: u32,
    role_claim: u32,
    request_id: u32,
) -> GbpBuffer

Sends a GSP signal.