Function drive_browser 

pub async fn drive_browser<F, Fut, T>(
    url: &str,
    opts: BrowserDriveOptions,
    f: F,
) -> Result<T>
where
    F: FnOnce(Page) -> Fut,
    Fut: Future<Output = Result<T>>,

Launch Firefox, navigate to url, run f with the live page, then tear down.