Create a controller for Additional search views

[obulat]

Problem

Search controller in the API cannot return the results necessary for additional search views project.

Description

The collection controller should re-use some of the search controller functionality, but the query should be constructed differently:

• only the specific tag, source or source+creator filters should be applied. No search query with q or search within title/description/tag is necessary.
• items should be sorted by created_on.
• tag view should probably also use the popularity and authority boosting for ranking the results.

Additional context

The additional search views project implementation plan: https://docs.openverse.org/projects/proposals/additional_search_views/20230719-implementation_plan_additional_search_views.html