feat: Add DAG format visitors implementations

[dpnova]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.93%. Comparing base (fec0bf1) to head (867677f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #66      +/-   ##
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+ Coverage   96.90%   96.93%   +0.03%     
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  Files           1        1              
  Lines          97       98       +1     
  Branches       12       12              
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+ Hits           94       95       +1     
  Misses          3        3              

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[Copilot]

Pull request overview

This PR adds visitor utility functions for printing DAG structures in different formats.

Changes:

• Adds createPrintVisitor function for simple indentation-based graph visualization
• Adds createTreeVisitor function for tree-like visualization with box-drawing characters
• Exports the new visitor functions from the main index module
• Includes comprehensive test coverage for both visitor types

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
lib/visitors.ts	Implements two visitor factory functions for printing graph structures with different formatting styles
test/visitors.spec.ts	Comprehensive test suite covering default behavior, custom configurations, and various graph structures
index.ts	Exports the new visitor utilities from the main module

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[sha1n]

LGTM, I only want a few name changes - see comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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[Copilot]

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[sha1n]

Thank you!

[sha1n]

@dpnova Just resolve the conflicts (sorry about that) and push and I'll rebase.

🙏