Integrated Aria2 Download Manager per Cudiph

DISCLAIMER: This extension is not a standalone download manager by itself but you need aria2 as the server or use aria2Tray to configure it with a GUI and leave it running in the background. Motrix or any other aria2 powered download manager is likely can work too.

Download aria2Tray at https://github.com/Cudiph/aria2tray/releases/latest

Features:
- Intercept download - Forward download from the browser to the aria2 instance.
- Automatic fetching - When it downloads metadata files such as `.torrent` or
`.metalink` it'll automatically download the files specified inside.
- Download history - Every time download finished, the history will be saved and
not lost when you close the browser.
- Pie progress indicator - Show pie progress on the browser toolbar (need to pin
the extension first)
- Customizable - Progress color can be customized to any color (very game
changing)
- Hotkey - keyboard shortcut is available
- Fallback server - Add another server configuration as a fallback if the main
one fail. Program will try to connect from top to bottom order in the options.

aria2Tray integration features:
- Ability to open and delete file/folder
- Get information of file

Source code available at https://github.com/Cudiph/IA2DM