Add hyprland utilities

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

users/configs/qalculate/default.nix

@@ -0,0 +1,11 @@
+{ user ? throw "user argument is required" }: { config, pkgs, ... }:
+
+{
+  home-manager.users."${user.name}" = {
+    home.packages = with pkgs; [ qalculate-gtk ];
+
+    wayland.windowManager.hyprland.settings.bind = [
+      ", XF86Calculator, exec, ${pkgs.qalculate-gtk}/bin/qalculate-gtk"
+    ];
+  };
+}