Create upload request

curl --request POST \
  --url https://services.commercengine.dev/api/v1/x2yh61zw4k/admin/media/files/upload-request \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "upload_type": "image",
  "file_name": "<string>",
  "file_size": 123
}'

{
  "message": "<string>",
  "success": true,
  "content": {
    "file": {
      "id": "<string>",
      "upload_type": "image",
      "upload_url": "<string>"
    }
  }
}