feat: allow non-github klipper repositories, as well as ssh cloning

[o080o]

This change allows users to use Klipper repositories other than github.com, including gitlab.com.

This addresses #398 as well as including the functionality from the open PR #323 regarding ssh cloning (since, they both touch the same line of code, in effectively the same way)

[hg42]

I generally think, kiuah should not mess with the repo url at all. My own current patch just removes the sed command to remove the github from the url, but for compatibility I add https://github/, if the url does not contain ://. I just wanted to create a pull request, but then saw this one.

[dw-0]

This should be possible with KIAUH v6 which's alpha got released just a minute ago. So im closing this PR for now. Thanks anyways!