Enhance allOf decoder to accumulate changes from previous decoders

[joanllenas]

• Enhance the allOf decoder to accumulate transformations from previous decoders.
  When a decoder performs a map, flatMap, or similar operation, the resulting transformation should be carried forward so that the final value reflects all prior transformations.
• Regenerate the documentation.

[codecov]

Codecov Report

❌ Patch coverage is 98.27586% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.54%. Comparing base (05c64fc) to head (df5b498).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/schemas/all-of.ts	98.27%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #52      +/-   ##
==========================================
+ Coverage   96.48%   96.54%   +0.05%     
==========================================
  Files          38       38              
  Lines        1537     1592      +55     
  Branches      140      147       +7     
==========================================
+ Hits         1483     1537      +54     
- Misses         54       55       +1     

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