Configure site search w/ facets

Configure search api, facet views.

Is Search API Database Backend really helping, or is this module viable?
https://www.drupal.org/project/core_views_facets
No, it depends on facets 2.x.

Instructions

1. Install Search API via composer.
2. Enable Search API Database Backend submodule (search_api_db).
3. Create search server w/ database backend.
   1. Name: Database
4. Create search index on Database.
   1. Name: Content
   2. Datasources: Content
   3. Server: Database
5. Add fields to index.
   1. Content type: content_type
   2. ID: id
   3. Created: created
   4. Changed: changed
   5. Title: title
   6. Title: title_fulltext
   7. Topics: topics
6. Configure processors.

TODO: Add and display screenshots.