Merge pull request #9582 from ChaoticMind/ctrl_backspace

Implement some keyboard hotkeys for chat (TextFieldWidget)

OpenRA.Game/Graphics/IGraphicsDevice.cs

@@ -61,6 +61,7 @@ namespace OpenRA
 		Bitmap TakeScreenshot();
 		void PumpInput(IInputHandler inputHandler);
 		string GetClipboardText();
+		bool SetClipboardText(string text);
 		void DrawPrimitives(PrimitiveType type, int firstVertex, int numVertices);
 
 		void SetLineWidth(float width);