[Feature Request] Show "download in progress" indicator in the tray

When the user wants a completely silent download approach, it's useful to have an indicator in the tray showing the download is in progress.

Something like this:

(i took this progress icon from ShareX's encoding task)

## My suggestion would be:
Have an option to show individual tray icon with a progress bar for each download in progress, or show just one general icon for all the downloads combined.

## Why that would make ABDM standout from other DMs?

Currently, IDM only shows a static icon with no progress bar. And it just shows many of those for each download individually — making it completely useless.