Reverted git clone in GDExtension URL to HTTPS for uniformity
(When you use SSH to clone a repository, it authenticates using SSH keys without needing your GitHub username and password. In contrast, HTTPS cloning prompts for your GitHub credentials directly, making it more straightforward if you haven't set up SSH keys.)
Fixed git clone URL in GDNative to clone from godot-cpp.git
(When you use SSH to clone a repository, it authenticates using SSH keys without needing your GitHub username and password. In contrast, HTTPS cloning prompts for your GitHub credentials directly, making it more straightforward if you haven't set up SSH keys.)