feat: transition from Hyprland to GNOME desktop environment

- Updated Bellerophon configuration to include GNOME desktop settings and packages.
- Added GNOME-specific packages and extensions for enhanced user experience.
- Introduced scripts for display management tailored for ZenBook Duo under GNOME.
- Implemented systemd services for automatic display management and backlight control.
- Integrated UWSM for improved session management in Hyprland.
- Enhanced lid monitoring and USB display management scripts for ZenBook Duo.
- Configured keyring support for GNOME and integrated it with PAM.
- Updated display manager settings to enable GDM for GNOME sessions.

hosts/common/optional/hyprland.nix

@@ -14,5 +14,17 @@
     portalPackage = pkgs.xdg-desktop-portal-hyprland;
   };
 
+  # Enable UWSM for better Wayland session management
+  programs.uwsm = {
+    enable = true;
+    waylandCompositors = {
+      hyprland = {
+        prettyName = "Hyprland";
+        comment = "Hyprland Wayland compositor";
+        binPath = "/run/current-system/sw/bin/Hyprland";
+      };
+    };
+  };
+
   environment.sessionVariables.NIXOS_OZONE_WL = "1";
 }