Get full URL of repository. ([url])

Similar: [basename], [fullurl].

$ egit fullurl
$VCS_PROTOCOL: default protocol [https:]
$VCS_HOST: default host name [github.com]
$VCSUSERNAME: default username [$GITHUBUSERNAME]
$VCS_EXTNAME: default extension name

$ egit fullurl extra-git
https://github.com/username/extra-git

$ egit fullurl nodef/extra-git
https://github.com/nodef/extra-git

$ egit fullurl github.com/nodef/extra-git
https://github.com/username/extra-git

$ egit fullurl https://github.com/nodef/extra-git
https://github.com/username/extra-git

[url]: https://github.com/nodef/extra-git/wiki/url
[basename]: https://github.com/nodef/extra-git/wiki/basename
[fullurl]: https://github.com/nodef/extra-git/wiki/fullurl