Add documentation for ESP32-C3 Super Mini pinout and handle socket mount.

[gabpar]

I use an ESP32-C3 Super Mini on my Neato Botvac D5 and the default hardware UART pins (GPIO 6 and 7) caused a hardware conflict with the internal flash/JTAG pins, freezing the serial communication. I've changed to pins 20 and 21 and it works ok. I've mounted the microcontroller on a socket, on the top of the robot, in the hole of the bin handle, this way it can be flashed by wire or removed without having to dismantle the robot.

[boehny]

I have the same problem; also C3 Super Mini and D5... , webinterface is not working by pushing the buttons, manual driving in card (HA) is not working.... but informations shown and spot cleaning works...... do you have some idears why?
I used the "standard" yaml file with the change of the rx and tx pins 20/21.... but sill the same problem...

[gabpar]

After I've connected the pins [TX:21 RX:20] and changed the yaml file accordingly, I had no problems anymore. I use the house cleaning mode because that cleans the entire room or floor even though is not keeping the map in the memory like it did with the app. Did you press Start firs and then try to move the robot with the arrows? I ask because I remember I've tried to move it without reading that I have to press start first.