feat: add nutrition annotation

[raphael0202]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 36.00000% with 48 lines in your changes missing coverage. Please review.

Project coverage is 54.53%. Comparing base (20bfb31) to head (232b673).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
robotoff/insights/annotate.py	31.25%	22 Missing ⚠️
robotoff/types.py	46.87%	17 Missing ⚠️
robotoff/off.py	18.18%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1473      +/-   ##
==========================================
- Coverage   54.70%   54.53%   -0.18%     
==========================================
  Files          85       85              
  Lines        8624     8696      +72     
==========================================
+ Hits         4718     4742      +24     
- Misses       3906     3954      +48     

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