check if the backlinks are dofollow

As I got an intresting proposal to actually check wheather the link we're checking is dofollow or not, this should be implemented.

So make sure, that the link which is checked on the website we get the response of is **dofollow**.

My approach would be:

use `beautifulsoup` and look for the all links, then check for `sponsored and nofollow`, which we don't want our backlinks to be.

if this isn't the case, print ok, otherwise `print("---link marked as nofollow or sponsored")`