Changes

Update direct implementations of RecordLoadable with the new context parameter

No longer 100% backwards compatable with IGenericLoader, but thats fine

Update to loadables for fluid ingredient and entity ingredient

For simplicity, fluid ingredent ditched the single value method since set covers everything single value does.
Fluid ingredients had a loadable before, but the new one is a lot simplier and notably enforces the fluid is present always. Can use defaulting fields if we ever need to default to empty

Migrate various small registries to loadables

Migrate most recipe serializers to JSON

As part of this, ditch byprducts on golden bricks as the values are too small
OreRateType now has two new types: defaullt (which defers to the parent), and none (which does not boost, so a non-boosting byproduct can be in a boosting recipe)
Did not migrate modifier recipes yet and I plan to ditch ModifierMatch thus would rather not make a loadable out of it (plus, the recursive nature might make it harder)

Update to Mantle's Streamable change