Register VS Code built-in packages as skipped

[rzhao271]

This PR modifies the existing NPM component detector to skip components corresponding to VS Code built-in extensions in order to reduce false positives while scanning the VS Code repository.

Example component that should not be flagged: https://github.com/microsoft/vscode/blob/main/extensions/handlebars/package.json

New Detector Checklist

• I have gone through the docs for creating a new detector here
• My new detector implements IDefaultOffComponentDetector
• I have created a PR to the verification repo with components that my new detector can find
• (If necessary) I have updated the Feature Overview table in the README

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.3%. Comparing base (269fb53) to head (fa24d37).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1348     +/-   ##
=======================================
- Coverage   89.6%   89.3%   -0.4%     
=======================================
  Files        384     384             
  Lines      29963   30156    +193     
  Branches    1835    1841      +6     
=======================================
+ Hits       26875   26951     +76     
- Misses      2698    2812    +114     
- Partials     390     393      +3     

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[github-actions]

👋 Hi! It looks like you modified some files in the Detectors folder.
You may need to bump the detector versions if any of the following scenarios apply:

• The detector detects more or fewer components than before
• The detector generates different parent/child graph relationships than before
• The detector generates different devDependencies values than before

If none of the above scenarios apply, feel free to ignore this comment 🙂