fix(externals): avoid overriding packages with version conflict

[pi0]

🔗 Linked issue

resolves #503
resolves #456
resolves #161

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Changes for externals handling (node targets):

• Resolve symlinks of traced files to properly dedup for pnpm
• Also show warning for major version changes with leading zero (0.1.0 => 0.2.0 and 0.0.1 => 0.0.2)
• Improve warning formatting and show it once
• Fix: ignore entire directory of older version packages
• Revert back windows fix for (docs: fix typo in storage docs #424) as we are now for sure writing files once.
• resolve nodeModulesDirs relative to rootDir
• Add tests

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[codecov]

Codecov Report

Merging #515 (691e7fc) into main (9f3f017) will increase coverage by 0.42%.
The diff coverage is 97.29%.

@@            Coverage Diff             @@
##             main     #515      +/-   ##
==========================================
+ Coverage   63.54%   63.96%   +0.42%     
==========================================
  Files          55       55              
  Lines        3626     3644      +18     
  Branches      395      400       +5     
==========================================
+ Hits         2304     2331      +27     
+ Misses       1308     1299       -9     
  Partials       14       14              

Impacted Files	Coverage Δ
src/rollup/plugins/externals.ts	88.34% <97.22%> (+4.07%)	⬆️
src/options.ts	48.88% <100.00%> (+0.44%)	⬆️

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