Allow us to add/remove disadvantage from our attacks

I like to manually manage my class features and usually it works just fine. However, whenever I am given advantage for some reason, it can be a pain to work with as I can’t edit my attacks to have advantage.

While I can tell Franz I have advantage for a particular attack, it can be encumber-some. For example, I still haven’t figured out how to get advantage on my second attack (Extra Attack class feature). Sometimes I’m forced to roll externally and manually update enemy health.