src: expose help texts into node-config-schema.json

[pmarchini]

This is only a draft and needs a significant amount of refactoring before it can be considered "ready for review".
I'm opening it to gather some feedback!

[nodejs-github-bot]

Review requested:

• @nodejs/config

[codecov]

Codecov Report

❌ Patch coverage is 27.41935% with 45 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.49%. Comparing base (4ea921b) to head (6833ccc).
⚠️ Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
src/node_options.cc	24.00%	38 Missing ⚠️
lib/internal/options.js	22.22%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #58680      +/-   ##
==========================================
- Coverage   88.52%   88.49%   -0.03%     
==========================================
  Files         703      703              
  Lines      208396   208430      +34     
  Branches    40185    40192       +7     
==========================================
- Hits       184483   184453      -30     
- Misses      15918    15977      +59     
- Partials     7995     8000       +5     

Files with missing lines	Coverage Δ
src/node_config_file.cc	81.95% <100.00%> (ø)
src/node_config_file.h	100.00% <ø> (ø)
src/node_options.h	97.89% <ø> (ø)
lib/internal/options.js	46.82% <22.22%> (-1.42%)	⬇️
src/node_options.cc	76.23% <24.00%> (-1.53%)	⬇️

... and 35 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67867/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/67883/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68677/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68847/

[amilshahsahab]

doc/node-config-schema.json

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68850/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68852/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68855/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70374/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70384/