Add elara keybinds

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/elara/hardware/sas/default.nix

@@ -1,6 +1,9 @@
 { ... }:
 {
-  imports = [ ./display.nix ];
+  imports = [
+    ./display.nix
+    ./keybinds.nix
+  ];
 
   hardware = {
     enableAllFirmware = true;

hosts/elara/hardware/sas/keybinds.nix

@@ -0,0 +1,15 @@
+{ lib, pkgs, ... }:
+{
+  home-manager.sharedModules = [
+    {
+      wayland.windowManager.hyprland.settings.bindle =
+        let
+          brightnessctl = lib.meta.getExe pkgs.brightnessctl;
+        in
+        [
+          ", XF86MonBrightnessUp, exec, ${brightnessctl} -q s 5%+"
+          ", XF86MonBrightnessDown, exec, ${brightnessctl} -q s 5%-"
+        ];
+    }
+  ];
+}