wip: feat: Gen man pages

hosts/nixos-testbed/configuration.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, disko, ... }:
+{ config, pkgs, lib, disko, sydnix-cli, ... }:
 {
   imports = [
     ./hardware-configuration.nix
@@ -73,6 +73,7 @@
   environment.systemPackages = with pkgs; [
     neovim
     git
+    sydnix-cli.packages.x86_64-linux.default
   ];
 
   services.openssh.enable = true;