Firebase Storage. Generate on the client side a Download URL before uploading an item.

## What feature would you like to see?

Ability to generate, on the client side, a Download URL before running the upload process.
So that we can avoid the costs of unnecessary uploads if any error or exception happens.

## How would you use it?

Some of my documents in Firestore depend on a link of an uploaded image from Storage.
To add the image URL into a document field I first need to upload the file.

However, if for any reason, an error, exception, security rule rejection, etc. occurs, I have to delete the uploaded file since it's no longer relevant, as the user might decide to use another image.

This incurs in extra costs I think can be easily avoided by having the final generated URL with its token.
Similar to how Firebase provides a reference id locally on the client side.

If there is already a better approach to tackle this use case, please let me know.
Thanks.