New Tool (3.1): Run External App - for Linux users

Linux users can use Renoise as a Session - i.e log in straight to Renoise:

https://forum.renoise.com/t/linux-renoise-session-are-just-fantastic/24376

However if you need to use for example alsa-mixer or copy a file from usb to hdd…

So here is a tool to launch other Linux apps.

NB. Apps will have no borders and no window controls. Do not run terminals, for some reason keyboard events do not get processed, you will not be able to quit them.