Hi!

I wrote a simple daemon for controlling GPIOs via UNIX socket.
Currently only the output set/unset works. The program read a config
file and configuring the pins with libgpiod. The config file is in the
tools directory. I don't really know where should I drop and how to
configure libtool. The fork() is commented yet so the daemon writes
info to the terminal. With the command for ex.

echo "gpiochip1:PD21 set=1" | socat - UNIX-
CONNECT:/var/run/gpiodaemon.sock 

you can set a configured out to high. If it is useful for the project I
can send more patch in the future with more feature. This is as you can
see a demo only. I tested with an Allwinner H6 SoC (OrangePi Lite2). I
am newbie in contributing so please fix me if required.

Regards,
André Kovács