Implement abritrary git repositories

[Flat]

Instead of just GitHub support allow any full git URL path to be installed as an add-on.

Examples of installation (non exhaustive):
wowa install http://git.example.com/user/addon branch
wowa install http://git.example.com/user/addon/branch
wowa install-git http://git.example.com/user/addon#branch
etc.

While this won't allow metadata from apis unless implemented as individual CVS sites it allows users to install add-ons from any potential repository such as the tukui development repositories that may contain bug fixes or features that are available before a release on the conventional add-on sites.

[antiwinter]

Well, this is possible. But the information provided by wowa info would be very limited for arbitrary repos.

[antiwinter]

Supported