Get user data from firebase

Usage

frbs_get_user_data(id_token)

A named list with the following items:

users: A list of length 1 which contains a nested named list with the following items:
- localId: The uid of the current user.
- email: The email of the account.
- emailVerified: Whether or not the account's email has been verified.
- displayName: The display name for the account.
- providerUserInfo: Named list of provider objects which contain "providerId" and "federatedId".
- photoUrl: The photo Url for the account.
- passwordHash: Hash version of password.
- passwordUpdatedAt: The timestamp, in milliseconds, that the account password was last changed.
- validSince: The timestamp, in milliseconds, which marks a boundary, before which Firebase ID token are considered revoked.
- disabled: Whether the account is disabled or not.
- lastLoginAt: The timestamp, in milliseconds, that the account last logged in at.
- createdAt: The timestamp, in milliseconds, that the account was created at.
- customAuth: Whether the account is authenticated by the developer.
error:
- NULL if no error code in response
- A list of 2 if response was an error:
  - code: Error code
  - message: Error message

if (FALSE) {
user_data <- frbs_get_user_data("<id_token>")
lapply(user_data, `[[`, 1)
}