List Asset Reports

{  "items": [    {      "asset_id": "string",      "name": "string",      "kind": "string",      "target": "string",      "last_scanned_at": "2019-08-24T14:15:22Z",      "last_outcome": "string",      "finding_count": 0,      "proven_count": 0,      "partial": false    }  ],  "period_days": 0}