Create flow (phone number scoped)

curl --request POST \
  --url https://api.kapso.ai/meta/whatsapp/v24.0/{phone_number_id}/flows \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "name": "appointment_booking",
  "categories": [
    "APPOINTMENT_BOOKING"
  ]
}
'

{
  "id": "<string>",
  "success": true,
  "validation_errors": [
    {
      "error": "<string>",
      "error_type": "<string>",
      "message": "<string>",
      "line_start": 123,
      "line_end": 123,
      "column_start": 123,
      "column_end": 123
    }
  ]
}