Add 5G-NB-IoT Board + Arduino Core Support #187

Job	Run time
build (ubuntu-latest, examples/arduino-blink)	2m 14s
build (ubuntu-latest, examples/arduino-external-libs)	1m 54s
build (ubuntu-latest, examples/arduino-internal-libs)	1m 49s
build (ubuntu-latest, examples/arduino-web-thing-led)	44s
build (ubuntu-latest, examples/zephyr-blink)	2m 9s
build (ubuntu-latest, examples/zephyr-drivers-lcd-hd44780)	1m 46s
build (ubuntu-latest, examples/zephyr-subsys-logger)	2m 28s
build (windows-latest, examples/arduino-blink)	5m 26s
build (windows-latest, examples/arduino-external-libs)	4m 38s
build (windows-latest, examples/arduino-internal-libs)	3m 41s
build (windows-latest, examples/arduino-web-thing-led)	1m 47s
build (windows-latest, examples/zephyr-blink)	6m 23s
build (windows-latest, examples/zephyr-drivers-lcd-hd44780)	4m 29s
build (windows-latest, examples/zephyr-subsys-logger)	6m 15s
build (macos-latest, examples/arduino-blink)	3m 55s
build (macos-latest, examples/arduino-external-libs)	2m 28s
build (macos-latest, examples/arduino-internal-libs)	3m 14s
build (macos-latest, examples/arduino-web-thing-led)	1m 6s
build (macos-latest, examples/zephyr-blink)	3m 41s
build (macos-latest, examples/zephyr-drivers-lcd-hd44780)	2m 59s
build (macos-latest, examples/zephyr-subsys-logger)	3m 48s
	1h 6m 54s

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