Add RequestWindowAttention API.

Robust.Client/Graphics/Clyde/Clyde.Windowing.cs

@@ -468,6 +468,11 @@ namespace Robust.Client.Graphics.Clyde
             GLFW.SetWindowTitle(_glfwWindow, title);
         }
 
+        public void RequestWindowAttention()
+        {
+            GLFW.RequestWindowAttention(_glfwWindow);
+        }
+
         public void ProcessInput(FrameEventArgs frameEventArgs)
         {
             GLFW.PollEvents();

Robust.Client/Graphics/Clyde/ClydeHeadless.cs

@@ -58,6 +58,11 @@ namespace Robust.Client.Graphics.Clyde
             // Nada.
         }
 
+        public void RequestWindowAttention()
+        {
+            // Nada.
+        }
+
         public override bool Initialize()
         {
             return true;

Robust.Client/Interfaces/Graphics/IClyde.cs

@@ -14,6 +14,12 @@ namespace Robust.Client.Interfaces.Graphics
 
         Vector2i ScreenSize { get; }
         void SetWindowTitle(string title);
+
+        /// <summary>
+        ///     This is the magic method to make the game window ping you in the task bar.
+        /// </summary>
+        void RequestWindowAttention();
+
         event Action<WindowResizedEventArgs> OnWindowResized;
 
         Texture LoadTextureFromPNGStream(Stream stream, string? name = null,