Add boxes and switcheroo modules; enable kdenlive

Register GNOME Boxes and Switcheroo in core packages and enable flags
Turn on kdenlive for Garand‑Desktop and adjust its wrapper for QT
scaling
Extend Docker module with host‑specific profile support and conditional
Nvidia integration
Reformat package definitions (plex, distrobox, winboat) and tidy
nvidia‑driver list

modules/drivers/nvidia-drivers.nix

@@ -13,7 +13,9 @@ in {
 
   config = mkIf cfg.enable {
     services.xserver.videoDrivers = ["nvidia"];
-    environment.systemPackages = with pkgs; [nvidia-docker];
+    environment.systemPackages = with pkgs; [
+      nvidia-docker
+    ];
     hardware = {
       nvidia-container-toolkit.enable = true;
       nvidia = {