Sniffing serial documentation added #302

Job	Run time
Building tests/esp32-arduino-hon-ethernet.yaml	1m 58s
Building tests/esp32-arduino-hon-wifi.yaml	2m 4s
Building tests/esp32-arduino-smartair2-ethernet.yaml	1m 52s
Building tests/esp32-arduino-smartair2-wifi.yaml	1m 54s
Building tests/esp32-idf-hon-ethernet.yaml	2m 53s
Building tests/esp32-idf-hon-wifi.yaml	2m 58s
Building tests/esp32-idf-smartair2-ethernet.yaml	2m 53s
Building tests/esp32-idf-smartair2-wifi.yaml	2m 44s
Building tests/esp8266-hon-wifi.yaml	1m 52s
Building tests/esp8266-smartair2-wifi.yaml	1m 44s
Building tests/rpipicow-hon-wifi.yaml	1m 56s
Building tests/rpipicow-smartair2-wifi.yaml	1m 44s
Building tests/esp8266-simple-smartair2.yaml	1m 47s
Building tests/esp8266-simple-hon.yaml	1m 35s
Building tests/libretiny-hon.yaml	2m 16s
Building tests/libretiny-smartair2.yaml	2m 4s
	34m 14s

Provide feedback