Update network configuration

configuration.nix

@@ -33,12 +33,26 @@ boot.extraModprobeConfig = ''
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
   # Enable networking
-  networking.networkmanager.enable = true;
+  networking.networkmanager = {
+    enable = true;
+    plugins = with pkgs; [
+        networkmanager-ssh
+        networkmanager-fortisslvpn
+        networkmanager-iodine
+        networkmanager-l2tp
+        networkmanager-openconnect
+        networkmanager-openvpn
+        networkmanager-sstp
+        networkmanager-strongswan
+        networkmanager-vpnc
+    ];
+
+  };
 
   # Set your time zone.
   time.timeZone = "Europe/Berlin";
 
-  # Select internationalisation properties.
+  # Select internationalization properties.
   i18n.defaultLocale = "de_DE.UTF-8";
 
   i18n.extraLocaleSettings = {
@@ -78,9 +92,6 @@ boot.extraModprobeConfig = ''
 
   environment.systemPackages = with pkgs; [
         wget
-        networkmanager
-        wireguard-tools
-        wg-netmanager
         epiphany
         nodejs_24
         dive