perf: Fix OpenSearch memory problems

[frascuchon]

• Using Lucene engine implementation for vector search because of reasons ([RFC] Lucene based kNN search support in core OpenSearch opensearch-project/OpenSearch#3545).

  => This option is only available for OpenSearch >= 2.2

• Remove word cloud computation and indexing with a multilingual analyzer (reduce the indexing resources). The better way to compute this word/term cloud will be using a list of provided tokens or tokenizer instead of our custom one.

[codecov]

Codecov Report

Base: 89.48% // Head: 89.68% // Increases project coverage by +0.20% 🎉

Coverage data is based on head (423fa02) compared to base (2d66715).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@                         Coverage Diff                          @@
##           feature/similarity-vector-search    #2019      +/-   ##
====================================================================
+ Coverage                             89.48%   89.68%   +0.20%     
====================================================================
  Files                                   158      158              
  Lines                                  7871     7852      -19     
====================================================================
- Hits                                   7043     7042       -1     
+ Misses                                  828      810      -18     

Flag	Coverage Δ
pytest	89.68% <100.00%> (+0.20%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../server/daos/backend/client_adapters/opensearch.py	91.80% <ø> (+5.73%)	⬆️
src/argilla/server/daos/backend/generic_elastic.py	88.41% <ø> (ø)
.../argilla/server/daos/backend/mappings/text2text.py	100.00% <ø> (ø)
src/argilla/server/services/metrics/models.py	81.25% <ø> (ø)
.../argilla/server/services/tasks/text2text/models.py	97.36% <ø> (ø)
...server/services/tasks/text_classification/model.py	99.32% <ø> (ø)
...erver/services/tasks/token_classification/model.py	98.97% <ø> (ø)
src/argilla/server/settings.py	76.66% <ø> (-0.39%)	⬇️
...lla/server/daos/backend/client_adapters/factory.py	92.85% <100.00%> (-3.58%)	⬇️
...rc/argilla/server/daos/backend/mappings/helpers.py	97.87% <100.00%> (-0.59%)	⬇️
... and 8 more

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