Get available categories

curl --request GET \
  --url https://api.pandabase.io/public/shops/{id}/categories

{
  "statusCode": 200,
  "message": "OK",
  "payload": {
    "categories": [
      {
        "id": "ctg_AlPz4AtrQM",
        "name": "Gift Card",
        "handle": "giftcards"
      }
    ]
  }
}