use deno info once it can output json

[hayd]

Atm udd uses regex to get the urls which is hacky.

note: importmaps will have to be handled differently (but trivially).

[David-Else]

It is done and released in deno 1.2 :) denoland/deno#6372

[hayd]

I guess the logic I was thinking would be:

1. get the set of specifiers and redirects from deno info
2. iterate through this to replace the urls

This seems ok, but OTOH the current way is working :)

[masx200]

Why has no one come to solve this problem in the past three years?

[KnorpelSenf]

I'm sure @hayd would be happy to accept your contribution :)