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": "bde2f421-d5fe-4e7f-994b-e9ab23147ada",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2025-12-05T02:29:39.456-08:00",
      "updated_at": "2025-12-05T02:29:39.456-08:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "10051589-09f9-4567-a8fb-72d83ad5eb87"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "f99fa1f8-eb4a-42fd-a0b1-b6c21a408d9b",
            "type": "retrospective_steps"
          },
          {
            "id": "9f90ffbf-604c-4fa6-ac8d-e9d8773e0a4e",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "10051589-09f9-4567-a8fb-72d83ad5eb87",
            "type": "severities"
          }
        ]
      }
    }
  }
}