Function fetchMrtdPopInit

fetchMrtdPopInit(
options: FetchMrtdPopInitOptions,
): Promise<FetchMrtdPopInitResult>
Initiates MRTD Proof of Possession validation (Phase 3.2 of L2+ flow).

Sends session correlation parameters to the MRTD PoP Service and receives:
- Cryptographic challenge for Anti-Cloning Internal Authentication
- Nonce for next step
- Optional MRZ data from CIE National Registry
Parameters
- options: FetchMrtdPopInitOptions
  Session parameters, attestation headers, and callbacks
Returns Promise<FetchMrtdPopInitResult>
Challenge, nonce, optional MRZ, and verify endpoint URL

Throws
If response is not HTTP 202

Throws
For network or parsing failures

It is alligned to the IT-Wallet v1.3 specs

See
IT-Wallet L2+ specification Section 12.1.3.5.3.2-3 (MRTD PoP Request/Response)
- Defined in packages/oauth2/src/mrtd-pop/fetch-mrtd-pop-init.ts:70