seed filtering

[ab9rf]

i would like to have some mechanism for quickly setting up a stockpile to only accept seeds that can be planted on the current map, seeds that cannot be planted on the current map but can be eaten or cooked, or seeds that cannot be planted on the current map and cannot be eaten or cooked. having these three categories available as filters when selecting for trade (with the caravan tool) would also be nice

[myk002]

for stockpiles, the filter would go as a "property", like tameable here

for trade filtering, they'd get added to the item predicate library, which is still in progress

[Eldresh]

I would like to add on to this, that I would like this with plants in general too. Maybe could also have "oil seed" as a filter too for seeds, or "cloth plant", stuff like that.