Extending Url Parsing (#2354)

Extending Url Parsing (#2354)

* added new test cases for urls

* Parsing URLs that do not have a authority component

* Increasing the robustness of the URL parser for passwords

* Rewrote the no authority case for urls and updated prettyprinting to
reflect the change.

* fixed matching empty port

* added upper bound for port number

* Updated the url parsing to accept an empty username.

* check if port is valid

* Updated the url tests to test new extensions to the url library.

* Updating the style for recently added extensions to urls.factor.

* removed sanity check for port, want to allow for IPvX support

Co-authored-by: David Flores <dflores0818@gmail.com>