Implement anvil

[ShockedPlot7560]

Introduction

As the title suggests, this PR implements the anvils

Relevant issues

• Implemented anvil functionality #6305 PR abandoned and reworked

Changes

API changes

• Introduce a new Durable::isValidRepairMaterial enabling everyone to implement their own verification logic
• Add repairMaterials to ArmorMaterial and ToolTier
• Add repairCost functions in Item

Behavioural changes

• Anvil works

Tests

I tested this PR by doing the following (tick all that apply):

• Writing PHPUnit tests (commit these in the tests/phpunit folder)
• Playtesting using a Minecraft client (provide screenshots or a video)
• Writing a test plugin (provide the code and sample output)
• Other (provide details)

https://youtu.be/d3vcwi_45DY

[IvanCraft623]

Just a quick overview

No longer valid

[dktapps]

My gut reaction to this is: I don't like the code.

I don't think we should be using custom actions for this since the actions are only usable with specific types of transactions. By the way other stuff has been done, different AnvilTransaction classes should be implemented.

I'm also not liking the logic of some of the item comparisons being limited to checking type IDs. Plugins will likely want to implement more complex logic, like using tags or NBT checking.

[dktapps]

I think it would also probably be preferable to have more events, e.g. PlayerItemRenameEvent, PlayerItemRepairEvent, PlayerItemCombineEvent (not sure about this last one). (That being said, if there were transaction types for this instead of actions, it would be a good amount nicer).

Doesn't make much sense to make plugins do complex logic to figure out the action type when we can just tell them directly.

[github-actions]

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