Function run 

pub async fn run(
    session: &str,
    framed: Framed<UnixStream, FrameCodec>,
    redraw: bool,
    ctl_path: &Path,
    env_vars: Vec<(String, String)>,
    no_escape: bool,
    forward_agent: bool,
    forward_open: bool,
    oauth_redirect: bool,
    oauth_timeout: u64,
    heartbeat_interval: u64,
    heartbeat_timeout: u64,
) -> Result<i32>