Add parsing support for block NBT

[me4502]

Adds block NBT parsing support.

Test with //set chest{'Lock':'cake'}, then notice you can only open the chest with an item named cake

Test with //set oak_sign[rotation=12]{'is_waxed':1,'front_text':{'messages':['{"text":"a"}','{"text":"a"}','{"text":"a"}','{"text":"a","color":"red"}']}} for a waxed sign with 'a' on every line where the last line is red

[codecov]

Codecov Report

Merging #2173 (c5d327f) into master (856aaa6) will increase coverage by 0.31%.
Report is 52 commits behind head on master.
The diff coverage is 0.00%.

❗ Current head c5d327f differs from pull request most recent head c000572. Consider uploading reports for the commit c000572 to get more accurate results

@@             Coverage Diff             @@
##             master   #2173      +/-   ##
===========================================
+ Coverage      8.88%   9.20%   +0.31%     
+ Complexity     1095    1038      -57     
===========================================
  Files           886     871      -15     
  Lines         46452   43683    -2769     
  Branches       5189    4881     -308     
===========================================
- Hits           4129    4019     -110     
+ Misses        42130   39483    -2647     
+ Partials        193     181      -12     

Files Changed	Coverage Δ
...t/extension/factory/parser/DefaultBlockParser.java	1.31% <0.00%> (-0.08%)	⬇️
...it/extension/factory/parser/DefaultItemParser.java	3.57% <0.00%> (ø)
...k89q/worldedit/internal/wna/WorldNativeAccess.java	0.00% <0.00%> (ø)
...ava/com/sk89q/worldedit/world/block/BaseBlock.java	26.66% <0.00%> (-0.61%)	⬇️

... and 89 files with indirect coverage changes

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[octylFractal]

Check behavior for this test case: chest[double={whoops:"nbt ]"}; it might pass, or fail with a weird error.

I suspect we might need to be a little more strict in what is accepted here. It might be worth writing an ANTLR grammar for this instead, since it's getting quite complex.

[me4502]

State is missing trailing ']' is the error we get here, which appears to be the correct error

[octylFractal]

Similarly here, we might cut off NBT early if there's } in an NBT string, and someone doesn't put one at the end, resulting in a weird error.

[me4502]

This will result in an invalid NBT error

[octylFractal]

Closes #2375