add kdeconnect as a service config

modules/features/services/kdeconnect.nix

@@ -0,0 +1,24 @@
+{ inputs, ... }: let
+  optionName = "features.services.kdeconnect.enable";
+in {
+  imports = [ (inputs.helpers.mkStandardFeature.flakeModule "graphics" optionName "KDE Connect") ];
+
+  flake.nixosModules.graphics = { config, lib, ... }: {
+    imports = [ (inputs.helpers.mkStandardFeature.nixosModule { inherit config optionName; } {}) ];
+
+    config = lib.mkIf (config.features.services.kdeconnect.enable) {
+      networking.firewall.allowedTCPPortRanges = [
+        {
+          from = 1714;
+          to = 1764;
+        }
+      ];
+    };
+  };
+
+  flake.homeModules.graphics = { config, lib, ... }: {
+    imports = [ (inputs.helpers.mkStandardFeature.homeModule { inherit config optionName; } {
+      services.kdeconnect.enable = true;
+    }) ];
+  };
+}