start coding for multi-sensor variant: gather data of all sensors and process image[N] only by request

F3:F303/MLX90640multi/Readme.md

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+Works with several MLX90640 sensors
+=================================
+
+When attached, udev will create symlink /dev/mlx_sensor0. This is the udev rule:
+
+```
+
+ACTION=="add", ENV{USB_IDS}=="0483:5740", ATTRS{interface}=="?*", PROGRAM="/bin/bash -c \"ls /dev | grep $attr{interface} | wc -l \"", SYMLINK+="$attr{interface}%c", MODE="0666", GROUP="tty"
+
+```
+
+Protocol:
+
+```
+
+aa - change I2C address to a (a should be non-shifted value!!!)
+c - continue MLX
+d - draw image in ASCII
+i0..4 - setup I2C with speed 10k, 100k, 400k, 1M or 2M (experimental!)
+p - pause MLX
+r0..3 - change resolution (0 - 16bit, 3 - 19-bit)
+t - show temperature map
+C - "cartoon" mode on/off (show each new image)
+D - dump MLX parameters
+G - get MLX state
+Ia addr - set  device address
+Ir reg n - read n words from 16-bit register
+Iw words - send words (hex/dec/oct/bin) to I2C
+Is - scan I2C bus
+T - print current Tms
+
+
+```
+
+To call this help just print '?', 'h' or 'H' in terminal.