Script that dumps all the sphinx objects from the inventory URL

I prepared a script that dumps all the sphinx objects from an inventory using the sphinx API. I don't know if this is the most proper place to have this, but follow the MR for analysis.

Thanks

mentioned in merge request bob.io.image!34 (closed)

Would this be too much for bob.extension? What do you think @andre.anjos

Looks to me bob.admin is the right place to have it in. This is too specific and concerns debugging broken doc links only. I'm not sure having it in bob.extension is a good idea. For one, it depends on docopt.

merged

mentioned in commit e8eba183