feat: more dynamic theming

modules/nixos/shell/dunst.nix

@@ -0,0 +1,23 @@
+{
+  config,
+  lib,
+  pkgs,
+  username,
+  ...
+}:
+
+let
+  cfg = config.shell.components.dunst;
+in
+{
+  options.shell.components.dunst = {
+    enable = lib.mkEnableOption (lib.mdDoc "Enable a pre-configured dunst setup");
+  };
+
+  config = lib.mkIf cfg.enable {
+    home-manager.users.${username}.services.dunst = {
+      enable = true;
+      settings = { };
+    };
+  };
+}