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": "f13b13f7-b0dc-4a7d-ba8f-2f40bb3921a2",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2026-02-11T04:05:45.877-08:00",
      "updated_at": "2026-02-11T04:05:45.877-08:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "f7f2ce6f-a345-4bef-ab7a-02f826545085"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "41f530b3-069b-43fb-9e5d-c4f28960e2db",
            "type": "retrospective_steps"
          },
          {
            "id": "c57b9100-5a04-4a6a-862b-85693716323e",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "f7f2ce6f-a345-4bef-ab7a-02f826545085",
            "type": "severities"
          }
        ]
      }
    }
  }
}