Add hyprland monitor config option

modules/home/hyprland/hyprland.nix

@@ -24,6 +24,8 @@ in
     };
     xwayland.enable = true;
     settings = {
+      monitor = cfg.monitor;
+
       general = {
         "$modifier" = "SUPER";
       };

modules/options/hyprland.nix

@@ -23,5 +23,12 @@ in
         The terminal to use for Hyprland.
       '';
     };
+    monitor = mkOption {
+      type = types.listOf types.str;
+      default = [ ",preferred,auto,1" ];
+      description  = ''
+        Monitors to use for Hyprland.
+      '';
+    };
   };
 }