feat: add lazydocker

modules/nixos/virtualisation/docker.nix

@@ -1,7 +1,13 @@
-{username, ...}: {
+{
+  username,
+  pkgs,
+  ...
+}: {
   virtualisation = {
     docker.enable = true;
   };
 
+  environment.systemPackages = with pkgs; [lazydocker];
+
   users.users.${username}.extraGroups = ["docker"];
 }