Add Korganizer configuration

modules/desktop/plasma/default.nix

@@ -13,4 +13,15 @@
     ];
 
     services.desktopManager.plasma6.enable = true;
+
+    programs.kde-pim = {
+        enable = true;
+        kmail = true;
+        kontact = true;
+        merkuro = true;
+    };
+    
+    environment.systemPackages = with pkgs.kdePackages; [
+        korganizer
+    ];
 }