Refactor events into voxel-reach and voxel-mine instead of hijacking Game

Requires https://github.com/deathcap/voxel-reach/commit/1203738b5e836b5f882140419efb31737bf2fb4c and https://github.com/deathcap/voxel-mine/commit/c31f7f4c568d99ce0efb876b8e9d21fd05771306