Suggestion: Nut Trees

[inkdear]

I've been enjoying using Terraqueous, and noticed that nuts seem to be the one sort of tree crop the mod is missing, so I thought I'd drop it here as a suggestion; almonds, walnuts, etc.

I can provide textures if desired.

Avocados and olives are two other major tree crops that might be nice additions. (Rustic has olives, but its growth times aren't configurable.)