Inhibit sleep when shortwave is running
I launch shortwave and does not touch to my computer then.
After a while the computer goes to sleep due to the inactivity.
Usually media applications inhibit sleep using a dbus call.
I'm not fluent is rust but I saw there is a crate
logind-dbus that permit to do that.
I can't provide a patch because I tried to make it works but failed. :)