Add OIDC auth config dump

[jessicamack]

SUMMARY

dump_auth_config will now also dump OIDC config data.

ISSUE TYPE

• New or Enhanced Feature

COMPONENT NAME

• Other

AWX VERSION

awx: 24.2.1.

ADDITIONAL INFORMATION

if OIDC is not configured

    {
        "OIDC_missing_fields": [
            "KEY",
            "OIDC_ENDPOINT"
        ]
    }

if it is configured

    {
        "type": "ansible_base.authentication.authenticator_plugins.open_id_connect",
        "name": "OIDC",
        "enabled": true,
        "create_objects": true,
        "users_unique": false,
        "remove_users": true,
        "configuration": {
            "KEY": "test",
            "SECRET": "test",
            "OIDC_ENDPOINT": "https://test.com",
            "VERIFY_SSL": true
        }
    }

[jbradberry]

My feedback on this PR is the same as #15134. The current behavior of self.is_enabled() is a potential bug due to considering any explicit but false-evaluating entries the same as a missing key-value pair.