feat: Using cosine similarity

[frascuchon]

Description

This PR changes the l2_norm distance to the cosine similarity for vector search. This change can improve results on similarity searches and also for least similarity searches.

This PR must be reviewed first

Closes #4123

Type of change

(Please delete options that are not relevant. Remember to title the PR according to the type of change)

• New feature (non-breaking change which adds functionality)
• Refactor (change restructuring the codebase without changing functionality)
• Improvement (change adding some improvement to an existing functionality)

How Has This Been Tested

(Please describe the tests that you ran to verify your changes. And ideally, reference tests)

The base dataset has been used with boh ElasticSearch and OpenSearch to verify this change.

Checklist

• I added relevant documentation
• I followed the style guidelines of this project
• I did a self-review of my code
• I made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I filled out the contributor form (see text above)
• I have added relevant notes to the CHANGELOG.md file (See https://keepachangelog.com/)

[codecov]

Codecov Report

Attention: 172 lines in your changes are missing coverage. Please review.

Files	Coverage Δ
src/argilla/__init__.py	86.66% <ø> (ø)
src/argilla/client/feedback/schemas/__init__.py	100.00% <100.00%> (ø)
src/argilla/client/feedback/schemas/records.py	96.42% <100.00%> (-2.66%)	⬇️
.../argilla/client/feedback/schemas/remote/records.py	53.53% <100.00%> (-35.25%)	⬇️
.../client/feedback/schemas/remote/vector_settings.py	100.00% <100.00%> (ø)
...argilla/client/feedback/schemas/vector_settings.py	100.00% <100.00%> (ø)
src/argilla/client/sdk/commons/errors_handler.py	12.90% <ø> (-77.73%)	⬇️
src/argilla/client/sdk/v1/datasets/models.py	100.00% <100.00%> (ø)
src/argilla/server/apis/v1/handlers/records.py	98.73% <100.00%> (+0.08%)	⬆️
...rgilla/server/apis/v1/handlers/vectors_settings.py	100.00% <100.00%> (ø)
... and 30 more

... and 90 files with indirect coverage changes

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[github-actions]

The URL of the deployed environment for this PR is https://argilla-quickstart-pr-4124-ki24f765kq-no.a.run.app