feat: transform module globals before compiling with tsc.

[knightedcodemonkey]

• update docs.
• upgrade specifier dependency.
• closes Replace import.meta.url, _filename, and _dirname appropriately #42
• works around CommonJS globals permitted for ES module builds with no compiler error. microsoft/TypeScript#58658

BREAKING CHANGE:

• removes --parallel option.
• upgrades supported node versions >= 20.11.0.

[codecov]

Codecov Report

Attention: Patch coverage is 95.00000% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 98.18%. Comparing base (aa9980d) to head (9c45dc1).

Files	Patch %	Lines
src/duel.js	94.25%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #44      +/-   ##
==========================================
+ Coverage   96.46%   98.18%   +1.71%     
==========================================
  Files           3        3              
  Lines         453      385      -68     
==========================================
- Hits          437      378      -59     
+ Misses         16        7       -9     

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