Function handle_bundle_hier 

pub fn handle_bundle_hier(
    engram: PathBuf,
    manifest: PathBuf,
    out_hierarchical_manifest: PathBuf,
    out_sub_engrams_dir: PathBuf,
    max_level_sparsity: usize,
    max_chunks_per_node: Option<usize>,
    embed_sub_engrams: bool,
    verbose: bool,
) -> Result<()>