include total_count_per_object_type in search response

[stevenwinship]

What this PR does / why we need it: SPA Collection Page needs to show counts of the files, datasets, and collections (dataverses) in the results

Which issue(s) this PR closes:#11065

• Closes Feature Request: Extend Search API to include counts for file, dataset, collection #11065

Special notes for your reviewer:

Suggestions on how to test this: See SearchIT

Does this PR introduce a user interface change? If mockups are available, please link/include them here: No

Is there a release notes update needed for this change?: Included

Additional documentation:

[coveralls]

coverage: 22.568% (-0.003%) from 22.571%
when pulling 02ef448 on 11065-extend-search-api-to-include-type-counts
into 6e3a250 on develop.

[g-saracca]

Hi @stevenwinship , the count returned should be on the total number of items found but not on the basis of what is returned according to the pagination, is it implemented like that?

[stevenwinship]

Fixed counts to be all results and not just a pages worth

"count_in_response": 10, "total_count_per_object_type": { "Files": 20, "Datasets": 17, "Dataverses": 15 }

[github-actions]

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