Allow updateEffect spread to be customized or disabled for GenericCrafter

[overdramaticpanromantic]

Adds an updateEffectSpread and updateEffectSpreadMag for customization of where the updateEffect appears on a GenericCrafter. Previously, you couldn't ensure it appears at a given location, as it would always be placed all around the sprite. By default, this does the spread and also has the same spread magnitude as before, so it's backwards-compatible.

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[overdramaticpanromantic]

i forgot to sync the branch lmao