Create user Token using an API

[jochenklar]

Rationale / Begründung

• Users should be able to create a Token using /api/v1/accounts/token/.
• Admins and scripts should be able to create tokens for users /api/v1/accounts/users/<id>/token/

Affected

Users, Managers, Admins

References / Verweise

• https://www.django-rest-framework.org/api-guide/authentication/#tokenauthentication