Add profiles to the mod

[GordonFeetman]

Don't think this one needs much explanation, but I think it'd be nice to be able to save a few profiles so you don't have to manually adjust settings when switching farms :)
It'd be nice if you could give them names too, e.g. "Stacking Raid Farm", "Wither Skeleton Farm" or "Enderman Farm"

I love the mod btw, it's great!