An ugly solution to issue 72

Solution to the issue starcitizen-lug#72. It's not very clean since I didn't really understand the core of the problem and its resolution... it's an 'implementation' of polkit-org/polkit#201.

lug-helper.sh

@@ -261,6 +261,7 @@ try_exec() {
     retval=0
     # Use pollkit's pkexec for gui authentication with a fallback to sudo
     if [ -x "$(command -v pkexec)" ]; then
+        gnome-terminal -- bash -c "pkttyagent --process $$"
         pkexec sh -c "$1"
 
         # Check the exit status