Add paper-only PlayerPreparesGrindstoneCraftEvent (#2401)
* Add paper-only PlayerPreparesGrindstoneCraftEvent
* cant return a location
* readd @Location; fix tryAdvancedMatcher
* eventHandler cleanup
* meta example
* remove redundant meta line
* tal5 cleanup
* fix meta wording
* fix again
* ordering
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commit: f9f543a)
