Performance Testing

[whimxiqal]

• Use weighted A search instead of standard A search
• Use WorldEdit, Mockito, and JMH to create real searches for benchmarking the path-finding algorithm
• Made every path-finding mode's steps use distance rather than an arbitrary cost
• Adjust Journey lifecycle to allow for complete shutdown and restart between test harnesses
• Move DataManager to proxy class to allow for test harness to override
• Fix isAtSurface to fix the "surface" search calculation
• More debug logs for PathTrials
• Use ScheduledExecutorServices in TestSchedulingManager rather than custom scheduling logic