I switched registrar, as OVH was ~4x cheaper.
This needs a small change to the module to both refer to OVH instead of
Gandi in the documentation, and make use of the correct API.
I also needed to disable the propagation check, as it looks like OVH is
slower than Gandi, and leads to spurious errors...
Let's consolidate all modules under one path, so that NixOS,
home-manager, and nix-darwin (if I ever end up using it down the line)
would go under the same folder.
Bruno BELANYI