GET /passkey/generate-authenticate-options

{  "challenge": "string",  "rp": {    "name": "string",    "id": "string"  },  "user": {    "id": "string",    "name": "string",    "displayName": "string"  },  "timeout": 0,  "allowCredentials": [    {      "id": "string",      "type": "string",      "transports": [        "string"      ]    }  ],  "userVerification": "string",  "authenticatorSelection": {    "authenticatorAttachment": "string",    "requireResidentKey": true,    "userVerification": "string"  },  "extensions": {}}