Window: add new setTextInputRect() method to optionally specify the location of the input when textInputEnabled is set to true

On native, this uses SDL_SetTextInputRect

project/include/ui/Window.h

@@ -57,6 +57,7 @@ namespace lime {
 			virtual void SetMouseLock (bool mouseLock) = 0;
 			virtual bool SetResizable (bool resizable) = 0;
 			virtual void SetTextInputEnabled (bool enable) = 0;
+			virtual void SetTextInputRect (Rectangle *rect) = 0;
 			virtual const char* SetTitle (const char* title) = 0;
 			virtual void WarpMouse (int x, int y) = 0;