[LoRaWAN] Added frequency plans AS923_2, AS923_3 and AS923_4 for Asian countries #1311

Job	Run time
esp-build	3m 22s
arduino:avr:uno	5m 11s
rpi-build	1m 9s
arduino:avr:mega	6s
rpi-pico-build	41s
arduino:mbed:nano33ble	5s
arduino:mbed:envie_m4	5s
arduino:megaavr:uno2018	5s
tock-build	1m 47s
arduino:sam:arduino_due_x	5s
arduino:samd:arduino_zero_native	7s
adafruit:samd:adafruit_feather_m0	6s
adafruit:nrf52:feather52832	5s
esp32:esp32:esp32	6s
esp8266:esp8266:generic	8s
SparkFun:apollo3:sfe_artemis	4s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	5s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	6s
stm32duino:STM32F1:mapleMini	5s
MegaCoreX:megaavr:4809	7s
arduino:mbed_rp2040:pico	6s
rp2040:rp2040:rpipico	6s
CubeCell:CubeCell:CubeCell-Board	6s
MegaCore:avr:1281	6s
teensy:avr:teensy41	5s
arduino:renesas_uno:minima	5s
rpi-test	11s
	14m 20s

Provide feedback