Changes

Implement material repair tool hook

Replaces exposing repair indices and max repair weight in the material stat hook, allowing a lot of code deduplciation in various repair recipes
Also allows implementing the new MaterialRepairModule, which repalces specialized repair recipes. Allows repairing a tool with a material that is not a tool part
Might migrate modifier repair to a similar system, will have to decide what to do with pig iron bacon repair for that (perhaps repair only material recipes?)

Switch return type of material stats hook to MaterialStatsId instead of WeigtedStatType

Last usage of the weights was tool repair, all remaining usages just care about the type of the stats

Implement missing materials tool hook

Replaces the old behavior of just random materials from tier 1. Not the most neccessary thing in most cases, but might help some pack maker who is trying to gift tools but is unable to add NBT
The main future benefit of this module is setting default materials for migration if we ever change an existing tool from having no materials to having materials

Cleanup tool definition constructors

Since all data has been fully migrated to tool definitions now, no need for a builder anymore
The last remaining builder functionality was skip register, which can be accomplished via a factory method that auto-registers as opposed to the constructor which does not

Fix missing texture for stray slimeskulls

Decide on a per modiifer basis whether we wish to allow held items for armor modifers

Mainly impacted magnetic where the modifier had a held effect separate from armor (#5214)
While fixing this, also fixed wrong type of registration for the module for double jump (#5215)

Add a special render info for unknown instead of using untinted

Practically unknown is rarely visible, but when it is its useful to be able to differentiate it from a white material
Worth considering making missing render info fallback to unknown, but probably won't go that direction
As part of this change, materials are no longer nullable in most material model methods, defaulting to unknown instead.