[general] further improve immutability of KDE config

feat: add resources directory
feat: update KDE config
refactor: remove unused files

users/jo_puzzlevision/desktop/kde.nix

@@ -0,0 +1,27 @@
+{
+  inputs,
+  lib,
+  config,
+  pkgs,
+  outputs,
+  ...
+}: {
+  imports = [
+    inputs.plasma-manager.homeManagerModules.plasma-manager
+    outputs.homeManagerModules.themes.gruvbox.plasma
+  ];
+
+  home.packages = with pkgs; [
+    kdePackages.sierra-breeze-enhanced
+    kde-rounded-corners
+  ];
+
+  # Plasma configuration
+  programs.plasma = {
+    enable = true;
+
+    workspace = {
+      clickItemTo = "select";
+    };
+  };
+}