Add toggle for Bluetooth
Add toggle for Bluetooth

I use NetworkManager for Bluetooth tethering with Android - for some
reason, NetworkManager itself doesn't provide any way to disable/enable
Bluetooth radios, even though it can connect to them just fine, if they
are enabled.

Thus, I always need to first use rfkill or blueman to enable Bluetooth
before I can connect with networkmanager_dmenu. With this change, I can
do it all right from rofi.

firecat53/networkmanager-dmenu,firecat53/nmcli-dmenu