Get available 2FA providers (getAvailableTwoFaProviders)

Get the list of 2FA provider infos available for user to use. Example:

[
  {
    "type": "EMAIL",
    "default": true,
    "contact": "ab*****ko@gmail.com"
  },
  {
    "type": "TOTP",
    "default": false,
    "contact": null
  },
  {
    "type": "SMS",
    "default": false,
    "contact": "+38********12"
  }
]