feat(fields): add params to FieldModel for Facet Generator

[aboissinot-coveo]

SEARCHAPI-8362

Adding two new attributes to FieldModel for the Facet Generator feature:

• automaticFacetsCandidate: Whether this field is to be considered by the facet generator feature.
• label: A displayable label for the field when used by the facet generator.

See those attributes in Swagger.

For more context on the feature, refer to the Figma components.

Acceptance Criteria

• My changes are publicly available, documented, and deployed in production. (i.e. on Swagger)
  • Yes. See the endpoint in Swagger.
• JSDoc annotates each property added in the exported interfaces
• The proposed changes are covered by unit tests
  • Not applicable
• Commits containing breaking changes a properly identified as such
  • Not applicable
• README.md is adjusted to reflect the proposed changes (if relevant)
  • Not applicable
• My merge commit message will be conventional (See Conventional Commit)

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues found.

Scanned Manifest Files

[FelixBlaisThon]

:GG: on adding the JSDoc

[github-actions]

🎉 This PR is included in version 44.8.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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