[Enhancement] allow specifying multiple roles and clusterRoles per namespace

[iwilltry42]

Allows to specify lists of role/clusterRoles per namespaceRole, like

kind: User
apiVersion: klum.cattle.io/v1alpha1
metadata:
  name: iwilltry42
spec:
  clusterRoles:
    - view
  roles:
    - namespace: iwilltry42
      clusterRoles:
        - view
        - edit

[lalyos]

+1