["FEAT"] Add JWT Authentication support

[Asespinel]

Is your feature request related to a problem? Please describe.
At the moment eox tenant only supports Bearer authentication and Session Authentication. On future releases Bearer authentication is going to be deprecated, so we should be prepared by implementing JWT authentication to avoid any compatibility issues.

Describe the solution you'd like
JWT Authentication would allow to add Django applications so we could test the eox tenant API using Postmanor other similar clients

Additional context
Since Bearer authentication is going to be deprecated we could remove it completely from the plugin. The deprecation is described here: openedx/edx-drf-extensions#284