feat: add nixos-deploy module

[megheaiulian]

Summary

All-in-one module combining nix-drv, nixos-rebuild, and optional sops-deploy for deploying NixOS configurations.

Usage

module "deploy" {
  source      = "git::https://github.com/plumelo/nixtf.git//modules/nixos-deploy"
  attribute   = ".#nixosConfigurations.myhost"
  target_host = "192.168.1.100"
  sops_file   = "${path.module}/sops.yaml"  # optional
}

Dependencies

Requires #2 (sops-deploy) to be merged first.