Provide Structured SerializedData in PacCredentialInfo

Hi, it would be nice to provide a solution to deal with the `SerializedData` in PAC's `CredentialType` (`PacCredentialInfo` structure).
This could be quite useful for WHfB/smartcard users to obtain their NTLM hash in that encrypted `NTLM_SUPPLEMENTAL_CREDENTIAL` blob after the User-to-User authentication, in order to perform NTLM authentication to access some dedicated resources.
At least the `SerializedData` should be further structured as described in https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-pac/2f9cae55-350a-423e-a692-1d16659e544a