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": "dd4dc569-7f8a-45fe-905a-199c5264c19e",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2026-02-06T20:50:42.258-08:00",
      "updated_at": "2026-02-06T20:50:42.258-08:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "c41490be-8583-4f3d-8264-d75fe1235a58"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "bc6e1597-677b-490a-9c34-f18673bd4b4f",
            "type": "retrospective_steps"
          },
          {
            "id": "17c6e69f-35e5-4194-8003-6c1c8979122c",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "c41490be-8583-4f3d-8264-d75fe1235a58",
            "type": "severities"
          }
        ]
      }
    }
  }
}