New advancement for obtaining Swamp/Jungle Villagers

Considering the Villager Trade Rebalance experiments, both Jungle and Swamp villagers will become part of the game's progression. An issue many people have complained about with this is that neither of those villagers spawn naturally anywhere, they only appear due to villager breeding or curing their zombie versions.

A solution to this can be adding an advancement that follows Zombie Doctor that encourages players to cure Jungle and Swamp zombie villagers or breed villagers in said biomes.

A possible description could be "Obtain a villager from a biome unnatural to them", although that's just a secondary suggestion.