Add keybind to hide waybar

systems/modules/home/wm/hyprland.nix

@@ -100,6 +100,7 @@ in
         };
 
         bind = lib.flatten [
+          (bind "${mod} + W" (dsp.exec_cmd "pkill -SIGUSR1 -f '^waybar$'") {})
           (bind "${mod} + Q" (dsp.window.kill) { })
           (bind "${mod} + L" (dsp.exec_cmd "hyprlock") { })
           (bind "${mod} + D" (dsp.exec_cmd "rofi -show drun") { })