modules: Add Plasma module

modules/default.nix

@@ -22,6 +22,7 @@
     ./programs/waybar
     ./programs/zsh
     ./programs/xournalpp
+    ./programs/plasma
 
     # Services
     ./services/kanshi

modules/programs/plasma/default.nix

@@ -0,0 +1,30 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.ptw.programs.plasma;
+in {
+  options.ptw.programs.plasma = {
+    enable = lib.mkEnableOption "Enable KDE Plasma";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.xserver.desktopManager.plasma5 = {
+      enable = true;
+      runUsingSystemd = true;
+      supportDDC = true;
+    };
+
+    xdg.portal = {
+      enable = true;
+      extraPortals = [ pkgs.xdg-desktop-portal-kde ];
+    };
+    
+    environment.systemPackages = with pkgs; [ 
+      yakuake
+      libsForQt5.okular
+      libsForQt5.kdeconnect-kde
+      index-fm
+      kasts-git
+    ];
+  };
+}