feat: Support background upload files

[wll8]

Does it support uploading files in the background? Because when uploading large files, it will hinder the work.

[coderaiser]

There is no such possibility.

[wll8]

Why? What if I open a new browser window and do other work while uploading?

[coderaiser]

Why? Because I have no idea how to make it happen 🤷‍♂️. How do you imagine this from architecture perspective?

[wll8]

The easiest way, when closing the upload window, put it somewhere (which can be opened again), instead of actually ending the upload task.

[coderaiser]

The easiest way, when closing the upload window, put it somewhere (which can be opened again)

Where?