Passkey store
user: UUID
User UUID
WebAuthn registration key id
publicKey: Base64String
Passkey user public key
deviceType: "singleDevice" | "multiDevice"
Whether the passkey is single-device or multi-device
optional
transports: ("ble"
| "cable"
| "hybrid"
| "internal"
| "nfc"
| "smart-card"
| "usb")[]
Passkey physical transport layer