feat: add dedupeDependencies utility

[OrbisK]

fix #166

[codecov]

Codecov Report

Attention: Patch coverage is 28.12500% with 23 lines in your changes missing coverage. Please review.

Project coverage is 62.52%. Comparing base (660392f) to head (fa96ead).
Report is 67 commits behind head on main.

Files with missing lines	Patch %	Lines
src/cli.ts	0.00%	20 Missing ⚠️
src/api.ts	75.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #175       +/-   ##
===========================================
- Coverage   82.17%   62.52%   -19.65%     
===========================================
  Files           6        5        -1     
  Lines         516      515        -1     
  Branches       71      101       +30     
===========================================
- Hits          424      322      -102     
- Misses         91      190       +99     
- Partials        1        3        +2     

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