build

an attempt to add new RA4M1 target into GitHub Actions CI build #242

Job	Run time
build (esp8266:esp8266:nodemcuv2)	2m 46s
build (esp32:esp32:esp32:PartitionScheme=min_spiffs)	4m 35s
build (esp32:esp32:esp32s2)	6m 10s
build (esp32:esp32:esp32s3)	9m 27s
build (esp32:esp32:esp32c3)	6m 16s
build (esp32:esp32:esp32c6)	8m 39s
build (STM32:stm32:Nucleo_64)	2m 52s
build (STMicroelectronics:stm32:GenF1)	3m 1s
build (STMicroelectronics:stm32:GenWL)	3m 12s
build (raspberry)	1m 1s
build (energia:cc13xx:LAUNCHXL_CC1310)	3m 25s
build (CubeCell:CubeCell:CubeCell-GPS)	3m 35s
build (CubeCell:CubeCell:CubeCell-Board-PRO)	2m 59s
build (adafruit:nrf52:pca10056)	4m 27s
build (arduino:samd:mzero_bl)	3m 22s
build (arduino:avr:mega)	39s
build (arduino:renesas_uno:minima)	3m 16s
build (rp2040:rp2040:generic)	3m 47s
build (rp2040:rp2040:rpipicow)	5m 28s
	1h 18m 57s

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