Add support for generating random URLs

[php-coder]

It would be great to have a method for generating random URLs.

We can start from just a random string with arbitrary length and later add API for control possible protocols, domain zones, how many domains/subdomains it could have, port ranges, number of segments, etc

[ctapobep]

You need full-blown unicode URLs or "regular"?

[php-coder]

The regular is enough to me.