feat(generators): tables for symbols have headers

[alandefreitas]

Obsoletes #1027

[cppalliance-bot]

An automated preview of the documentation is available at https://1104.mrdocs.prtest2.cppalliance.org/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2025-10-31 22:52:08 UTC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.30%. Comparing base (86ce271) to head (2757005).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1104   +/-   ##
========================================
  Coverage    85.30%   85.30%           
========================================
  Files          306      306           
  Lines        22426    22426           
========================================
  Hits         19131    19131           
  Misses        3295     3295           

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