Add traits for Did Linked Resources

[sownak]

With createResource(), updateResource() and deactivateResource() support now enabled, we should support the did resource traits as well.
Example definitions:

{
    "updateableResource": {
      "type": "boolean",
      "title": "Rotatable Did linked resources",
      "description": "Did linked resources are updateable, allowing the resources to be replaced or updated with newer versions."
    },
    "deactivatableResource": {
      "type": "boolean",
      "title": "Deactivatable Did linked resources",
      "description": "Did linked resources are deactivatable."
    },
}