Events for using an item on block

[Fellteros]

Heya,
I noticed that there aren't any events for Item.useOnBlock() and AbstractBlock.onUseWithItem() methods. I recently tried to make a mod that would need this kind of callbacks, so I decided to implement it. It's mostly based on NeoForge's UseItemOnBlockCallback, with some minor changes (e.g. omitting the ITEM_BEFORE_BLOCK phase).

I also added a little test mod, that allows you to change stone bricks to their mossy variant when right-clicking them with moss, and stripping the moss with any axe.

I added these events to the event-interaction-api module, let me know if there is any better place to move them to

[Fuzss]

The events should allow for forcing ActionResult.PASS / ActionResult.PASS_TO_DEFAULT_BLOCK_ACTION respectively when cancelling vanilla behavior.

Ideally make the return value for the events @Nullable.

This has long been an issue with the existing interaction events not allowing for returning ActionResult.PASS properly. New interaction events shouldn't introduce this fault to begin with.

NeoForge also allows for cancelling vanilla regardless of the returned ActionResult.

[Fellteros]

I made both methods @Nullable and changed the mixins to return any non-null value from the callbacks. This should fix the issues you pointed out.