add option to netbox role for custom pipeline code for OIDC mapping

Add option to netbox role for ensuring custom pipeline code for OIDC
group and role mapping is either present or not.

The custom pipeline code is licensed under the Creative Commons: CC
BY-SA 4.0 license.

See:
https://github.com/goauthentik/authentik/blob/main/LICENSE
https://github.com/goauthentik/authentik/blob/main/website/integrations/services/netbox/index.md
https://docs.goauthentik.io/integrations/services/netbox/
5676b1a468

roles/netbox/meta/argument_specs.yaml

@@ -10,3 +10,7 @@ argument_specs:
       netbox__config:
         type: str
         required: true
+      netbox__custom_pipeline_oidc_group_and_role_mapping:
+        type: bool
+        required: false
+        default: false