[builder] add doc generation

[atoulme]

Description

Adds a go script that you can run manually as part of the distribution to output documentation.

The script takes an optional argument pointing to a go text template file. If no argument is given, the script will use the default md.tmpl file to generate a set of markdown tables for each component categories.

[codecov]

Codecov Report

Attention: Patch coverage is 26.66667% with 11 lines in your changes missing coverage. Please review.

Project coverage is 91.96%. Comparing base (0faea29) to head (3463d5f).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/builder/internal/builder/main.go	0.00%	10 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (26.66%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12528      +/-   ##
==========================================
- Coverage   92.00%   91.96%   -0.04%     
==========================================
  Files         469      469              
  Lines       25355    25370      +15     
==========================================
+ Hits        23327    23331       +4     
- Misses       1619     1629      +10     
- Partials      409      410       +1     

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