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": "899236f0-6eed-43f2-922d-a640b4470b84",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2025-07-15T12:56:21.693-07:00",
      "updated_at": "2025-07-15T12:56:21.693-07:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "d61ad99b-e1ed-4651-9689-bab66d15ea9a"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "99a1567d-b7dc-4f99-b1b1-70d23dfd5f2a",
            "type": "retrospective_steps"
          },
          {
            "id": "59ef54ed-7822-47a3-b74e-02bb69cd1cd1",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "d61ad99b-e1ed-4651-9689-bab66d15ea9a",
            "type": "severities"
          }
        ]
      }
    }
  }
}