Add more server-centered modules for cli and networking

modules/network-server.nix

@@ -0,0 +1,9 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  networking = {
+    useDHCP = true;
+  };
+}

modules/server-cli.nix

@@ -0,0 +1,18 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  environment.systemPackages = with pkgs; [
+    wget
+    curl
+    git
+
+    btrfs-progs
+  ];
+
+  programs = {
+    htop.enable = true;
+    vim.enable = true;
+  };
+}