code: def _print_unique_links_with_status_codes(page_url, soup):
      
      links = _get_unique_links(page_url, soup)
      for link in links:
          status_code = _get_link_status_code(link)
          print(link, " -> ", status_code)
docs: Finds all unique links in the html of the page source
          and then prints out those links with their status codes.
          Format:  ["link"  ->  "status_code"]  (per line)
          Page links include those obtained from:
          "a"->"href", "img"->"src", "link"->"href", and "script"->"src".