Feature: check for conflicting output file paths

[emmercm]

Fixes: #1201

[codecov]

Codecov Report

Attention: Patch coverage is 97.82609% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.24%. Comparing base (d02511c) to head (12d29f4).

Files	Patch %	Lines
src/igir.ts	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1208      +/-   ##
==========================================
+ Coverage   93.21%   93.24%   +0.02%     
==========================================
  Files         107      108       +1     
  Lines        6649     6689      +40     
  Branches     1570     1579       +9     
==========================================
+ Hits         6198     6237      +39     
- Misses        428      429       +1     
  Partials       23       23              

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[github-actions]

🧪 Branch testing instructions

This pull request has been merged, its base branch can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#main" [commands..] [options]

Comment generated by the Node.js Branch Exec workflow.