zephyr: esp32: add board support for ESP32xx_luatos_core #1661

Job	Run time
config (RELEASE 2,4,6 SIGNATURE)	9m 47s
config (RELEASE 2,4,6 SIGNATURE LOW)	14m 19s
config (RELEASE 2,4,6 SIGNATURE MEDIUM)	20m 6s
config (RELEASE 8,10 SIGNATURE)	7m 51s
config (RELEASE 8,10 SIGNATURE LOW)	11m 3s
config (RELEASE 8,10 SIGNATURE MEDIUM)	13m 54s
config (MINSIZEREL 2,4,6 SIGNATURE)	16m 51s
config (MINSIZEREL 2,4,6 SIGNATURE LOW)	23m 10s
config (MINSIZEREL 2,4,6 SIGNATURE MEDIUM)	25m 6s
config (MINSIZEREL 8,10 SIGNATURE)	10m 57s
config (MINSIZEREL 8,10 SIGNATURE LOW)	14m 19s
config (MINSIZEREL 8,10 SIGNATURE MEDIUM)	17m 6s
	3h 4m 29s

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