Facet search

[ahmednfwela]

Pull Request

Related issue

Fixes #340

What does this PR do?

• added Future<FacetSearchResult> facetSearch(FacetSearchQuery query) to MeiliSearchIndex
• added tests
• Internal refactoring

PR checklist

Please check if your PR fulfills the following requirements:

• [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [x] Have you read the contributing guidelines?
• [x] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[brunoocasali]

I'll let you merge after that :)

[ahmednfwela]

I will just ask you to improve the PR description to be close to what I should add to the CHANGELOG :)

well, the only user-facing change is just the added facetSearch method, the rest is just internal refactoring

I will fix the conflict and push a new version

[ahmednfwela]

@brunoocasali please check now :)

[meili-bors[bot]]

Build succeeded:

• integration-tests (dart 3.0.0)
• linter-check
• pana