curl --request GET \
  --url https://core.ravenna.ai/api/workflow-collections \
  --header 'x-ravenna-api-token: <api-key>'

{
  "items": [
    {
      "id": "<string>",
      "name": "<string>",
      "description": "<string>",
      "emoji": "<string>",
      "icon": "<string>",
      "color": "<string>",
      "createdAt": "<string>",
      "updatedAt": "<string>",
      "deletedAt": "<string>",
      "authorId": "<string>",
      "author": {
        "id": "<string>",
        "firstName": "<string>",
        "lastName": "<string>",
        "email": "<string>",
        "image": "<string>"
      },
      "workspaceId": "<string>",
      "parentCollectionId": "<string>",
      "workflowCount": 123
    }
  ],
  "totalCount": 123,
  "nextCursor": "<string>"
}