firebase auth phone otp
POST https://www.googleapis.com/identitytoolkit/v3/relyingparty/getAccountInfo?key={FIREBASE_SERVER_KEY}
{
  “idToken”: “eyJhbGciOiJEanNZspytaJL4wDZmu2OcwQujC360AJ_Q”
}
//result
{
  …,
  “users”: [
    {
      …,
      “phoneNumber”: “+351966666666”,
      …
    }
  ]
}
