Creates a retrospective process

curl --request POST \
  --url https://api.rootly.com/v1/retrospective_processes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '{
  "data": {
    "type": "retrospective_processes",
    "attributes": {
      "name": "<string>",
      "copy_from": "<string>",
      "description": "<string>",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "<string>"
        ]
      }
    }
  }
}'

{
  "data": {
    "id": "dc47bcd4-ac82-44d7-9d96-5db8a8a1551e",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2025-11-13T17:33:39.321-08:00",
      "updated_at": "2025-11-13T17:33:39.321-08:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "bd42e9a5-6b88-4731-9737-ebd11f47f934"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "5fbd81b6-09f8-4cad-82ac-2fbbd20b9e4c",
            "type": "retrospective_steps"
          },
          {
            "id": "474577c4-7da2-4e8c-ab71-0666a657560f",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "bd42e9a5-6b88-4731-9737-ebd11f47f934",
            "type": "severities"
          }
        ]
      }
    }
  }
}