text_wrap_debug scale factor commandline args (#9951)

# Objective

Add commandline arguments to `text_wrap_debug` to set the window and UI
scale factors.

examples/ui/text_wrap_debug.rs

@@ -1,13 +1,41 @@
 //! This example demonstrates text wrapping and use of the `LineBreakOn` property.
 
+use argh::FromArgs;
 use bevy::prelude::*;
 use bevy::text::BreakLineOn;
+use bevy::window::WindowResolution;
 use bevy::winit::WinitSettings;
 
+#[derive(FromArgs, Resource)]
+/// `text_wrap_debug` demonstrates text wrapping and use of the `LineBreakOn` property
+struct Args {
+    #[argh(option)]
+    /// window scale factor
+    scale_factor: Option<f64>,
+
+    #[argh(option, default = "1.")]
+    /// ui scale factor
+    ui_scale: f64,
+}
+
 fn main() {
+    let args: Args = argh::from_env();
+    let window = if let Some(scale_factor) = args.scale_factor {
+        Window {
+            resolution: WindowResolution::default().with_scale_factor_override(scale_factor),
+            ..Default::default()
+        }
+    } else {
+        Window::default()
+    };
+
     App::new()
-        .add_plugins(DefaultPlugins)
+        .add_plugins(DefaultPlugins.set(WindowPlugin {
+            primary_window: Some(window),
+            ..Default::default()
+        }))
         .insert_resource(WinitSettings::desktop_app())
+        .insert_resource(UiScale(args.ui_scale))
         .add_systems(Startup, spawn)
         .run();
 }