Adding Warlock features to character

Please add a way to directly add warlock features to a characters sheet, as of currently there is no way for you to set up eldritch invocations, pact magic, or mystic arcanum. There are also no pacts(pact of the blade/etc). There arent actually any official subclasses such as hexblade or fiend, I like the greatwyrm one, but its still disappointing. Honestly the only thing warlock actually has here is its spell list.