Fix Xtreme Download Manager

Until someone fixes the problem in wayland, use this trick.

    Save the script below with the name of your choice. I went with xdm.sh

#!/bin/bash

xdman

sleep 1

pid=$(pgrep -f "xdm-app")

if [ "$pid" != "" ]; then
    kill -9 "$pid"
    xdman
fi

    Make it executable

chmod xdm.sh

    Change the Exec property of xdm-app.desktop to the following.

    The .desktop file is usually found in /usr/share/applications

Exec=env GTK_USE_PORTAL=1 "/path/to/the/script/xdm.sh" %U

I just automated what #1237 (comment) said

I am using v8.029 btw!