Codechange: Add utility function for whether the focused window is a console

src/window.cpp

@@ -466,6 +466,15 @@ bool EditBoxInGlobalFocus()
 	return _focused_window->nested_focus != nullptr && _focused_window->nested_focus->type == WWT_EDITBOX;
 }
 
+/**
+ * Check if a console is focused.
+ * @return returns true if the focused window is a console, else false
+ */
+bool FocusedWindowIsConsole()
+{
+	return _focused_window && _focused_window->window_class == WC_CONSOLE;
+}
+
 /**
  * Makes no widget on this window have focus. The function however doesn't change which window has focus.
  */