add: index document full cont; entendpoint to return content

[AlisoSouza]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 54.54545% with 25 lines in your changes missing coverage. Please review.

Project coverage is 97.52%. Comparing base (3abfc55) to head (ce7800c).

Files	Patch %	Lines
app/store/elasticsearch_vector_store.py	13.79%	25 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #43      +/-   ##
===========================================
- Coverage   100.00%   97.52%   -2.48%     
===========================================
  Files           18       18              
  Lines          969     1011      +42     
===========================================
+ Hits           969      986      +17     
- Misses           0       25      +25     

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