III-6412 cleanup auth0 code

[JonasVHG]

Changed

• README.md: Removed info about auth0
• config.dist.yml: Replace auth0 with keycloak
• ActionServiceProvider: remove getIdentityProvider() & always use keycloak, when fetching a value from config.
• Rename LogOutAuth0Adapter to LogOutOAuthAdapter
• Rename LoginAuth0Adapter to LoginOAuthAdapter
• Rename RefreshAuth0Adapter to RefreshOAuthAdapter

Related PR

• https://github.com/cultuurnet/appconfig/pull/892

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Ticket: https://jira.publiq.be/browse/III-6412

[LucWollants]

I wonder if we should also change the naming of the generic classes like LogOutAuth0Adapter and change them to LogOutOAuthAdapter ?

[JonasVHG]

I wonder if we should also change the naming of the generic classes like LogOutAuth0Adapter and change them to LogOutOAuthAdapter ?

Done. But since we still use the auth0-sdk, we'll still have some variable names with auth0

[LucWollants]

I wonder if we should also change the naming of the generic classes like LogOutAuth0Adapter and change them to LogOutOAuthAdapter ?

Done. But since we still use the auth0-sdk, we'll still have some variable names with auth0

That's fine! Who knows, maybe we remove the dependency on that Auth0 SDK in the future.