Create tool for computing/plotting one-to-all distances/costs

[pedrocamargo]

Tool is interesting for computing "isochrones" and there is a demand from users.

[Art-Ev]

Was added with "Impendance Matrix" isn't it @pedrocamargo ? (if yes we can close the issue)

[pedrocamargo]

Not really. We have a many to many and one to one, but not one to many or one to all, although that is pretty simple to implement.