Automatic mode for observers

[Doop]

I spend a lot of my time observing rounds while I do other things, and something I've been really wanting is some kind of "automatic" mode. Basically, it would spend about 30 seconds following a person then switch to another. Maybe you could adjust the interval between swaps too! I really like the recent changes to the observer UI and I think this would be a fun addition, I don't know how difficult it would be to add though.