Refine bootloader and boot splash configurations

Configure the Limine bootloader to manage up to 10 generations and enable `canTouchEfiVariables` for improved EFI system integration.
Additionally, set Plymouth's `DeviceScale` to 2 to ensure the boot splash screen displays correctly on high-DPI monitors.

modules/system/nixos/boot/limine.nix

@@ -9,7 +9,13 @@ in
   };
   config = mkIf cfg.enable {
 
-    boot.loader.limine.enable = true;
+    boot.loader = {
+      limine = {
+        enable = true;
+        maxGenerations = 10;
+      };
+      efi.canTouchEfiVariables = true;
+    };
 
   };
 }

modules/system/nixos/boot/plymouth.nix

@@ -17,7 +17,11 @@ in
       "boot.shell_on_fail"
     ];
 
-    boot.plymouth.enable = true;
-
+    boot.plymouth = {
+      enable = true;
+      extraConfig = ''
+        DeviceScale=2
+      '';
+    };
   };
 }