Changes to Get event metrics

added the new optional query request parameter after

added the new optional query request parameter before

added the new optional query request parameter include_total

added the new optional query request parameter limit

added the optional property pagination to the response with the 200 status

added the new optional query request parameter include_previous

added the optional property data/items/search/p95_agentic_search_time to the response with the 200 status

added the optional property previous_totals to the response with the 200 status

added the required property data/items/embedding to the response with the 200 status

added the required property data/items/reranking to the response with the 200 status

added the required property totals to the response with the 200 status

added the new optional query request parameter group_by

added the optional property data/items/search/qa to the response with the 200 status

added the optional property data/items/store_id to the response with the 200 status

endpoint added