Create pre-signed S3 upload link

const response = await fetch('https://studio.edgeimpulse.com/v1/api/portals/{portalId}/upload-link', {
    method: 'POST',
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      "fileName": "text",
      "fileHash": "text"
    }),
});
const data = await response.json();

{
  "success": false,
  "error": "text",
  "url": "text",
  "ETag": "text"
}