Add `AnvilUseEvent` to the API

Is your feature request related to a problem?

Yes - I am working on a special anvil interface that allows players to rename items with MiniMessage tags to add colours and decorations to their item names. I want to charge players an amount of in-game currency for using it - I want the code for this to run once the player has taken the renamed item out of the result slot.

Describe the solution you'd like.

An AnvilUseEvent, which should fire even for "fake" anvils (anvil views created with the MenuType API opened for players).

Describe alternatives you've considered.

I tried using InventoryClickEvent, but I found it to be unreliable for isolating this scenario. This is because the result slot can be clicked in many different ways (e.g. while holding an item which results in nothing). I tried making sure the InventoryAction was NOTHING, but I found that this was the even case when removing the item from the result slot by clicking it with a bundle, which doesn't seem correct.

I think having a dedicated AnvilUseEvent (or similar name) would be a much more robust way of isolating this scenario.

Other

No response

Start by tracing the Anvil handling exposed through the MenuType API and comparing it with InventoryClickEvent and InventoryAction behavior for the result slot. Done means a dedicated AnvilUseEvent fires when a player takes the renamed result, including from fake anvils created through MenuType.