Generates new inactive* oauth_tokens for unregistered device IDs or new customer refresh tokens.

When this endpoint is called, the active refresh token and the devices registered with this token will be expired.

This endpoint should be called when:

• eCommerce has a customer refresh token and wants to register a new deviceId, generating its customer oauth token.
  DATA: [refresh_token, *extra_login_data]

• eCommerce does not have a customer refresh token and wants to register a new device tied to a NEW customer refresh token and customer oauth token.
  DATA: [customer_id, private_key, *extra_login_data]

*Extra_login_data is required only for eCommerces not using UnDosTres wallet authentication systems.
Such Ecommerces will receive ACTIVE customer oauth tokens.