Add option for "sets"

[mpclepto]

Currently it seems as though there is only an option for "weight" and "reps", but having an option for "sets" would be quite useful as the way I track my workouts is by:

Workout - Sets / Reps / Weight So for example: Lunges - 3 x 8 x 100lb

(Also, absolutely unrelated, but I wasn't sure where else to say this, but awesome project idea, I currently only use a good old fashioned lined note book and pencil to track my workouts. This captures the simplicity of that without me having to install another DB like SQL. I don't need my info bogged down with some cumbersome solution like WGER.

Also, this project finally got me to create a gibhub account after many years of browsing simply so I could say, keep up the good work, I'll be following this project closely! I realize this is quite young, so I'm sure there's plenty to be done, but literally with just adding sets, this is exactly what I need!)