[byteorder] Impl traits for byte arrays

[joshlf]

Closes #1749

[joshlf]

TODO:

• Audit impls for correctness (I banged them out pretty mechanically, so there could be endianness errors)
• Tests

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 22.58065% with 24 lines in your changes missing coverage. Please review.

Project coverage is 87.11%. Comparing base (ea28664) to head (8398b2d).

Files with missing lines	Patch %	Lines
src/byteorder.rs	22.58%	24 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1785      +/-   ##
==========================================
- Coverage   87.46%   87.11%   -0.35%     
==========================================
  Files          16       16              
  Lines        6021     6048      +27     
==========================================
+ Hits         5266     5269       +3     
- Misses        755      779      +24     

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