Add a window-resized hook which is fired when the window is actually

resized which may be later than the client resize, GitHub issue 2995.

resize.c

@@ -61,6 +61,7 @@ resize_window(struct window *w, u_int sx, u_int sy, int xpixel, int ypixel)
 	tty_update_window_offset(w);
 	server_redraw_window(w);
 	notify_window("window-layout-changed", w);
+	notify_window("window-resized", w);
 	w->flags &= ~WINDOW_RESIZE;
 }