Search the LEADER of a MARC record

Purpose/Overview:
To allow the user to search the data in the LEADER of a MARC record by position 07 and 17, and by 06-07 combined. See leader documentation for background about this combination: https://www.loc.gov/marc/bibliographic/bdleader.html

Requirements/Scope:

1. Allows the user to do an exact search of the data in leader positions or combination positions
2. The search is exposed as a GET request to an API endpoint
3. By default the search returns only records that are not suppressed from discovery

Approach:

Acceptance criteria:

• Results are returned in under a minute against a collection of 10 million SRS records
• Results should be paginated
• Max results per page should be 10 thousand
• Results should contain a JSON response with keys: records (array of associated instance UUIDS), recordCount (integer)
• A search with no results should have an empty records array and count of 0
• When passing parameter suppressed=true then records that are suppressed from discovery will be included in the results