feat: add facets support

Jelle Glebbeekrequested to merge
issue/search_api_vragen_ai-3565036:3565036-facets-support into 2.0.x

Adds support for retrieving facets using the facets module in combination with views.

Also fixes:

  • Issue with retrieving the error details.
  • Properly allows an empty search query.

Closes #3565036

Edited by Jelle Glebbeek

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