feat: add pangolin and newt modules

modules/nixos/networking/newt.nix

@@ -0,0 +1,30 @@
+{
+  flake.modules.nixos.networking =
+    {
+      config,
+      lib,
+      ...
+    }:
+    with lib;
+    let
+      cfg = config.tnix.networking.newt;
+    in
+    {
+      options.tnix.networking.newt = {
+        enable = mkEnableOption "Newt";
+
+        environmentFile = mkOption {
+          type = types.nullOr types.path;
+          default = null;
+          description = "Environment file with secrets passed to Newt";
+        };
+      };
+
+      config = mkIf cfg.enable {
+        services.newt = {
+          enable = true;
+          environmentFile = cfg.environmentFile;
+        };
+      };
+    };
+}