Cannot add custom fields to API calls, will fail validation for instances which require certain data

Hi! Our Cloudinary config requires the `client` parameter for asset uploads. We get a `Field 'client' is mandatory and cannot be left empty` error when using the `n8n-nodes-cloudinary` asset upload node because it currently does not support additional/custom query parameters. We can contribute a PR to make this change, but wanted to ask here first in case this is already planned.