Workflow should be assigned to admin sets

[scholarworks]

Descriptive summary

Workflows are currently linked to and generated by work types. In order to allow the most flexibility in workflow assignment, this should happen at the admin set level.

Expected behavior

1. Define a workflow with the following syntax

{
  "workflows": [
    {
      "name": "Default Workflow",
      "label": "Default Workflow",
      "description": "A single submission step, default workflow",
      "actions": [{
        "name": "deposit",
        "from_states": [{"names": ["new"], "roles": ["depositing"]}],
        "transition_to": "deposited",
        "notifications": [{
          "notification_type": "email",
          "name": "confirmation_of_submitted_to_ulra_committee",
          "to": ["creating_user"],
          "cc": ["advising"]
        }],
        "methods": [
          "CurationConcerns::Workflow::ActivateObject"
        ]
      }]
    }
  ]
}

1. In the admin dashboard, assign the workflow to a selected admin set.
2. When items are submitted to the admin set, the workflow is applied.

   Actual behavior

[IN PROGRESS]

Related work

1031, #1035

[scholarworks]

Closing and moving to sufia.