Use test matrix to build examples #223

Job	Run time
test	1m 18s
lint	6s
examples (uno, multiled_mbed)	1s
examples (uno, custom_hal)	1s
examples (uno, morse)	1s
examples (uno, candle)	1s
examples (uno, multiled)	1s
examples (uno, user_func)	1s
examples (uno, hello)	1s
examples (uno, breathe)	1s
examples (uno, simple_on)	1s
examples (uno, fade_on)	1s
examples (uno, sequence)	1s
examples (esp01, multiled_mbed)	8s
examples (esp01, custom_hal)	11s
examples (esp01, morse)	24s
examples (esp01, candle)	22s
examples (esp01, multiled)	23s
examples (esp01, user_func)	21s
examples (esp01, hello)	23s
examples (esp01, breathe)	24s
examples (esp01, simple_on)	23s
examples (esp01, fade_on)	23s
examples (esp01, sequence)	23s
examples (nano33ble, multiled_mbed)	1s
examples (nano33ble, custom_hal)	1s
examples (nano33ble, morse)	1s
examples (nano33ble, candle)	1s
examples (nano33ble, multiled)	1s
examples (nano33ble, user_func)	1s
examples (nano33ble, hello)	1s
examples (nano33ble, breathe)	1s
examples (nano33ble, simple_on)	1s
examples (nano33ble, fade_on)	1s
examples (nano33ble, sequence)	1s
examples (esp32dev, multiled_mbed)	8s
examples (esp32dev, custom_hal)	22s
examples (esp32dev, morse)	22s
examples (esp32dev, candle)	23s
examples (esp32dev, multiled)	23s
examples (esp32dev, user_func)	1s
examples (esp32dev, hello)	22s
examples (esp32dev, breathe)	23s
examples (esp32dev, simple_on)	1s
examples (esp32dev, fade_on)	23s
examples (esp32dev, sequence)	23s
examples (nucleo_f401re, multiled_mbed, --project-option="framework=mbed")	1s
	8m 43s

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