Matching-company API search text

For GiveCampus integrations and API.

The Gifts API returns matching_company with id, name, search_status and search_text. If there is no selected company ID, it returns all four as null even when separately stored search text appears in a report. This explains a possible report/API difference; check the actual contribution and deployed version before diagnosing a historical integration. Matching ratio and minimum/maximum match amounts are not fields in this object. Their availability in an external CRM requires an independently supported mapping/provider source; do not invent API fields or promise a roadmap change.