wayprompt: add testbed (#1708)

Link: https://github.com/nix-community/stylix/pull/1708

Reviewed-by: pancho horrillo <pancho@pancho.name>
Reviewed-by: NAHO <90870942+trueNAHO@users.noreply.github.com>

modules/wayprompt/testbeds/wayprompt.nix

@@ -0,0 +1,19 @@
+{ lib, ... }:
+{
+  stylix.testbed = {
+    ui.graphicalEnvironment = "hyprland";
+    ui.command.text = ''
+      wayprompt \
+        --get-pin \
+        --title "Wayprompt stylix test" \
+        --description "Lorem ipsum dolor sit amet, consectetur adipiscing elit." \
+        --button-ok "Okay" \
+        --button-not-ok "Not okay" \
+        --button-cancel "Cancel"
+    '';
+  };
+
+  home-manager.sharedModules = lib.singleton {
+    programs.wayprompt.enable = true;
+  };
+}