Validate props and throw helpful errors

[bigmistqke]

@vorth was having issues with an unsupported event from react-three-fiber (onPointerOver). This caused an error with a cleanup function. We should handle these types of errors more gracefully.

[vorth]

Specifically, inside createEvents, the addEventListener function simply returns undefined if type doesn't match any known value. It should throw an error with "unknown event type" or similar.