Use custom radix sort for ordering blocks

[octylFractal]

Suggestions for improvement are welcome, but as this class has been heavily benchmarked against stream parallel sort, changes should result in a significant positive performance difference.

[codecov-io]

Codecov Report

Merging #1277 into master will decrease coverage by 2.83%.
The diff coverage is 89.47%.

@@             Coverage Diff             @@
##             master   #1277      +/-   ##
===========================================
- Coverage     12.51%   9.67%   -2.84%     
+ Complexity      950     845     -105     
===========================================
  Files           761     762       +1     
  Lines         32165   32259      +94     
  Branches       3853    3866      +13     
===========================================
- Hits           4024    3120     -904     
- Misses        27810   28841    +1031     
+ Partials        331     298      -33     

Impacted Files	Coverage Δ	Complexity Δ
.../worldedit/extent/reorder/ChunkBatchingExtent.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...dit/internal/util/RegionOptimizedVectorSorter.java	92.39% <92.39%> (ø)	23.00 <23.00> (?)
...va/com/sk89q/worldedit/world/block/BlockTypes.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-2.00%)
...k89q/worldedit/util/concurrency/LazyReference.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (-5.00%)
...va/com/sk89q/worldedit/util/io/file/MorePaths.java	0.00% <0.00%> (-85.72%)	0.00% <0.00%> (-2.00%)
.../sk89q/worldedit/util/eventbus/HierarchyCache.java	23.52% <0.00%> (-76.48%)	1.00% <0.00%> (-4.00%)
.../com/sk89q/worldedit/util/collection/BlockMap.java	0.00% <0.00%> (-70.78%)	0.00% <0.00%> (-38.00%)
...sk89q/worldedit/extension/platform/Preference.java	0.00% <0.00%> (-66.67%)	0.00% <0.00%> (-1.00%)
...9q/worldedit/world/registry/BundledRegistries.java	0.00% <0.00%> (-62.50%)	0.00% <0.00%> (-3.00%)
...c/main/java/com/sk89q/worldedit/util/Location.java	0.00% <0.00%> (-56.46%)	0.00% <0.00%> (-19.00%)
... and 22 more

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