Feature/power button (#131)

i am not writing a changelog. disable gui on boot unless you run `sudo
systemctl start gdm3`. GDM takes over the power button and breaks it,
since we run headless its useless most of the time, so i'm removing it.

scripts/hardware/service.sh

@@ -45,6 +45,7 @@ ExecStart=-/sbin/agetty --autologin ghost --keep-baud 115200,57600,38400,9600 %I
 EOF
 	sudo systemctl daemon-reload
 	sudo systemctl restart [email protected]
+	sudo systemctl disable --now gdm3
 	echo "$USER ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/nopasswd-$USER
 
 	;;