Add regression tests for BLAKE3

[fxamacker]

Description

Add tests to verify 131107 BLAKE3 digests to detect compatibility regressions using input data sizes up to 102400 bytes.

Also compare 131107 BLAKE3 digests from two libraries to confirm they match

• github.com/zeebo/blake3
• lukchampine/blake3

The test file is a modified subset of circlehash64_test.go copied from fxamacker/circlehash.

The test uses SHA-512 to hash all 35 BLAKE3 digests that should match what is published by official BLAKE3 team. This allows us to compare one hardcoded value instead of 35.

An additional 131072 BLAKE3 digests are verified using a more random input data set than is used by the BLAKE3 team.

Closes #246

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• [x] Targeted PR against main branch
• [x] Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• [x] Code follows the standards mentioned here
• [x] Updated relevant documentation
• [x] Re-reviewed Files changed in the Github PR explorer
• [x] Added appropriate labels

[codecov-commenter]

Codecov Report

Merging #248 (dc74793) into main (f8f0a14) will increase coverage by 0.34%. The diff coverage is 100.00%.

:exclamation: Current head dc74793 differs from pull request most recent head 26ae318. Consider uploading reports for the commit 26ae318 to get more accurate results

@@            Coverage Diff             @@
##             main     #248      +/-   ##
==========================================
+ Coverage   68.62%   68.97%   +0.34%     
==========================================
  Files          14       14              
  Lines        7222     7245      +23     
==========================================
+ Hits         4956     4997      +41     
+ Misses       1631     1617      -14     
+ Partials      635      631       -4     

Impacted Files	Coverage Δ
storage.go	79.64% <100.00%> (+1.43%)	:arrow_up:
map.go	71.41% <0.00%> (+0.10%)	:arrow_up:
array.go	76.15% <0.00%> (+0.16%)	:arrow_up:
errors.go	19.37% <0.00%> (+4.65%)	:arrow_up:
storable.go	65.57% <0.00%> (+4.91%)	:arrow_up:

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