Function run_root_hook 

pub async fn run_root_hook(
    project_dir: &Path,
    modules_dir_name: &str,
    manifest: &PackageJson,
    hook: LifecycleHook,
) -> Result<bool, Error>

Run a lifecycle hook against the root package, if a script for it is defined. Returns Ok(false) if the hook wasn’t defined (no-op), Ok(true) if it ran successfully.

The caller is responsible for gating on --ignore-scripts.