util: add hex colors support in styleText

[araujogui]

Fixes #61543

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.71%. Comparing base (8fd5f6b) to head (8eb2649).
⚠️ Report is 166 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #61556      +/-   ##
==========================================
- Coverage   89.79%   89.71%   -0.09%     
==========================================
  Files         672      675       +3     
  Lines      203756   204908    +1152     
  Branches    39169    39376     +207     
==========================================
+ Hits       182956   183825     +869     
- Misses      13135    13344     +209     
- Partials     7665     7739      +74     

Files with missing lines	Coverage Δ
lib/util.js	98.18% <100.00%> (+0.20%)	⬆️

... and 107 files with indirect coverage changes

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[ljharb]

Please add test cases for invalid values.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/71262/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/71369/