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": "79cdc17f-7266-4645-a980-9262e9120a44",
    "type": "retrospective_processes",
    "attributes": {
      "name": "Retrospective Process 1",
      "description": "Retrospective Process 1 Description",
      "is_default": false,
      "created_at": "2025-05-29T17:47:36.986-07:00",
      "updated_at": "2025-05-29T17:47:36.986-07:00",
      "retrospective_process_matching_criteria": {
        "severity_ids": [
          "33a1ea67-25e3-42ad-a641-473fb9e07d51"
        ]
      }
    },
    "relationships": {
      "retrospective_steps": {
        "data": [
          {
            "id": "bb98635f-009d-4b15-8da3-08a5b5c493c9",
            "type": "retrospective_steps"
          },
          {
            "id": "14890c89-5c61-4fea-a810-e9aff3001066",
            "type": "retrospective_steps"
          }
        ]
      },
      "severities": {
        "data": [
          {
            "id": "33a1ea67-25e3-42ad-a641-473fb9e07d51",
            "type": "severities"
          }
        ]
      }
    }
  }
}