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": "f39bd675-e731-486e-8ac4-c9c4173222f8",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2026-01-21T07:02:56.631-08:00",
      "updated_at": "2026-01-21T07:02:56.631-08:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "9f1da54a-4078-467f-8760-89bf1d8f21e1"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "07099209-7c68-4840-ad7c-d2f235f7e89c",
            "type": "retrospective_steps"
          },
          {
            "id": "090b08de-e90d-41b9-b79d-d3b5a98a23f2",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "9f1da54a-4078-467f-8760-89bf1d8f21e1",
            "type": "severities"
          }
        ]
      }
    }
  }
}