~/.config/awesome/rc.lua: Log window titles to eventstream.

This is a temporary solution, see
https://github.com/heyLu/lp/rust/keylog-xlib.c for my attempt to do this
on my own.

.config/awesome/rc.lua

@@ -396,3 +396,10 @@ client.connect_signal("focus", function(c)
	end
	os.execute("/home/lu/.bin/events focus '" .. c.name .. "'")
end)
client.connect_signal("property::name", function(c)
	if (c.name == nil) then
		return
	end
	os.execute("/home/lu/.bin/events focus '" .. c.name .. "'")
end)