[Enhancement] Roughly Enough Items Compatibility

[Wpgradford]

I'm not sure how difficult this would be, but it would make it easier to know what items are possible to get from bird's nests. I've seen a couple different mods integrate Roughly Enough Items so I know it's possible, but it doesn't seem like it would be easy to add

[ldanidev]

Loot tables aren't just a list of ItemStacks, and without manually handling all the various functions & conditions and whatever, I've got no way of reliably doing this, and that's only for vanilla functions.
I've tried to do this myself.