Add Pac4J lib to authenticate user over OAuth/OIDC Server

[felipebonezi]

Is your feature request related to a problem? Please describe.
Play has complex OIDC module and you need to implement almost everything from scratch.

Describe the solution you'd like
So, would be great to import Pac4J library and create model classes to use it resource.

Describe alternatives you've considered
To test this model, we can you some external OAuth/OIDC service like Auth0, Okta or even Keycloak over Docker container.

Additional context
We must provide test cases to ensure auth routine.