[v1.10.0] Language settings & search parameter

Following this central issue

Explanation of the feature

Changes

• new settings localizedAttributes and the sub-methods associated to it
• new search parameter locales

Usage: https://meilisearch.notion.site/v1-10-Language-settings-usage-26c5d98b553349d9abacbe7aff698e4e

TODO

• [ ] Add a new search parameter named locales to the search methods (GET and POST)
• [ ] Ensure the updateSettings route can accept the new localizedAttributes setting
• [ ] Create new methods getLocalizedAttributes, updateLocalizedAttributes and resetLocalizedAttributes corresponding to the sub settings GET/PUT/DELETE routes
• [ ] Add tests
• [ ] Add code samples for the feature:

  search_parameter_reference_locales_1: |-
      client.index('INDEX_NAME').search('進撃の巨人', { locales: ['jpn'] })
  get_localized_attribute_settings_1: |-
      client.index('INDEX_NAME').getLocalizedAttributes()
  update_localized_attribute_settings_1: |-
      client.index('INDEX_NAME').updateLocalizedAttributes([
          { attributePatterns: ['jpn'], locales: ['*_ja'] },
      ])
  reset_localized_attribute_settings_1: |-
      client.index('INDEX_NAME').resetLocalizedAttributes()