Upload Product Media

curl --request POST \
  --url https://server26-dot-royalti-project.uc.r.appspot.com/product/{id}/media \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form 'mediaType=<string>' \
  --form file=@example-file

{
  "message": "Media uploaded successfully",
  "mediaUrl": "https://storage.example.com/media/product-123/artwork.jpg"
}