Do you want to make a trade, or just a procedure that drops an enchanted diamond axe?
If you just want the villager to drop something, you can add specific enchantments to items within a procedure, you should be able to find some helpful functions in the 'item properties' tab.
If you want to add a trade for enchanted items, it's a bit more complicated. You'll want to add a trade for a regular diamond axe, then lock the loot table/trade table, open the code, and add a function to randomly enchant it, along with a pool of your desired enchantments. (This is a bit hard to explain, but Microsoft has a half-decent tutorial on how to do this, it's also quite useful for adding potions and other NBT values to loot table items.)
Do you want to make a trade, or just a procedure that drops an enchanted diamond axe?
If you just want the villager to drop something, you can add specific enchantments to items within a procedure, you should be able to find some helpful functions in the 'item properties' tab.
If you want to add a trade for enchanted items, it's a bit more complicated. You'll want to add a trade for a regular diamond axe, then lock the loot table/trade table, open the code, and add a function to randomly enchant it, along with a pool of your desired enchantments. (This is a bit hard to explain, but Microsoft has a half-decent tutorial on how to do this, it's also quite useful for adding potions and other NBT values to loot table items.)