add den pattern

modules/security/bitwarden.nix

@@ -0,0 +1,16 @@
+{ config, lib, pkgs, ... }:
+
+let
+  dirModules = config.features.modules.security or { };
+in
+{
+  config = lib.mkIf ((dirModules.enable or false) && (dirModules.bitwarden.enable or true)) {
+    nixpkgs.config.permittedInsecurePackages = [
+      "electron-39.8.10"
+    ];
+
+    environment.systemPackages = with pkgs; [
+      bitwarden-desktop
+    ];
+  };
+}