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": "996c2041-009a-47fa-93c9-bf24a9baf17e",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2025-08-05T00:34:21.573-07:00",
      "updated_at": "2025-08-05T00:34:21.573-07:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "4619f08d-5c8d-41a4-8514-7d9d495a8a6b"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "4e7dc805-1109-43e6-9748-3130694c7edc",
            "type": "retrospective_steps"
          },
          {
            "id": "d560953c-8c60-4134-bf3a-574fc57b3ff3",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "4619f08d-5c8d-41a4-8514-7d9d495a8a6b",
            "type": "severities"
          }
        ]
      }
    }
  }
}