feat(auth): Add TotpInfo field to UserRecord

[pragatimodi]

Adding a TotpInfo field to UserRecord for Admin users to view a user's MFA configuration. TOTP enrollment for users is enabled via client SDKs only.
Testing was done by manually enrolling a user on TOTP using curl and creating a test app to get the corresponding user's UserRecord configuration
Manual testing output:

{
  "MultiFactor": {
    "EnrolledFactors": [
      {
        "UID": "d3dc0070-665b-42e1-b3ec-18f98af224fb",
        "DisplayName": "totp-enroll-test",
        "EnrollmentTimestamp": 1685671931000,
        "FactorID": "totp",
        "PhoneMultiFactorInfo": null,
        "TOTPMultiFactorInfo": {}
      }
    ]
  }
}

[renkelvin]

LGTM with nits.

[prameshj]

Is this a user-facing field? If yes, we need an API review for it, right?

[pragatimodi]

Yes

[prameshj]

So we cannot merge this until the API change is approved, right? Can we keep PhoneNumber for now and merge the rest?

[pragatimodi]

Working on the API proposal for this.

[prameshj]

nit: can we keep the previous UID which is more representative of what the UID looks like?

[pragatimodi]

I would prefer it this way since we can test UIDs with integration tests but for more clarity as we add unit tests this might be better. What do you think? We can revert back to the previous UID and add comments if you feel strongly about this.

[prameshj]

since we can test UIDs with integration tests but for more clarity as we add unit tests this might be better

I am not sure what the human-readable UID gives us that the other alphanumeric value does not. Can you elaborate?

[pragatimodi]

Like you said, human-readable. It is just easier to write unit test cases as we add more factors here. I guess it doesn't make a lot of difference to have alphanumeric strings for unit tests as such because these are generated by the backend in the actual flow.

[lahirumaramba]

Please rebase this to use the dev branch as the base. Thank you!

[pragatimodi]

Moving this to #573 as per offline sync with @lahirumaramba to base it off dev branch. Closing this PR.