Draft: usb: Implement the usb portal implementation
This is still work in progress
Requires https://github.com/flatpak/xdg-desktop-portal/pull/1354 and flatpak support from https://github.com/flatpak/flatpak/pull/5620
This is still work in progress
Requires https://github.com/flatpak/xdg-desktop-portal/pull/1354 and flatpak support from https://github.com/flatpak/flatpak/pull/5620