CyclopsMC / IntegratedDynamics / 33318654865

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Classify the ingredient index positions map

Partial matches, such as extractions that ignore data components, had to
linearly scan all indexed instances of a priority level. Classifying the
positions map by the ingredient's first category type reduces that to
the instances that share the category, which for item stacks means the
instances of the same item.

This was tried before in 8f53b7eb5 and
reverted, because it regressed the exact-match and non-empty position
lookups (CyclopsMC/IntegratedTerminals#134): classified maps resolve
exact matches by scanning their sub-map, and copy all their values into
a new list when iterated. Neither applies any more, as both of those
lookups are now resolved without IIngredientMap#getAll.

Measured with 5000 instances spread over 200 positions:
index_lookup_item goes from 0.3302 to 0.1642 ms/op.

Closes #1412

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