feature(networking): add networking module for firewall and network settings

modules/nixos/networking.nix

@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # set hostnname
+  networking.hostName = "neon";
+
+  # user networkmanager
+  networking.networkmanager.enable = true;
+
+  # firewall default configs
+  networking.firewall.allowedTCPPorts = [ ];
+  networking.firewall.allowedUDPPorts = [ ];
+
+  # enable bluetooth
+  hardware.bluetooth.enable = true;
+  
+  # Add network-related packages
+  environment.systemPackages = with pkgs; [
+    wireguard-tools
+  ];
+}