Feature description

Just make so that the trades provided by Irons Spellbook show up in the JEI/EMI tab trading menu

I know they are not villagers, but they still provide trades to the player.

How it improves the player experience

This helps in knowing what those traders provide and also helps in knowing how the villager bible is acquired in-game.

closing because feature requests are now exclusively being handled on discord https://discord.gg/TRzEdrndM2