[v1.9.0] Filter by ranking score

[Clémentine]

Related to meilisearch/integration-guides#301

Explanation of the feature

Introduction of a new search parameter to filter documents based on their ranking score

Usage: https://meilisearch.notion.site/Filter-by-score-usage-224a183ce7b24ca99b6a9a8da755668a?pvs=74

TODO

• Ensure the search method accepts the rankingScoreThreshold search parameter
• Add tests

⚠️ Make PRs pointing to bump-meilisearch-v1.9.0 and NOT main. Please do 1 PR for all of these changes, and not several.

[Clémentine]

Closed by #1669