Add Arduino Stella #1341

Job	Run time
compile-examples (arduino:mbed:opta, opta)	28m 26s
compile-examples (arduino:mbed:nicla_sense, nicla_sense)	22m 7s
compile-examples (arduino:mbed:nano33ble, nano33ble)	12m 0s
compile-examples (arduino:mbed:giga, giga)	44m 52s
compile-examples (arduino:mbed:edge_control, edge_control)	7m 56s
compile-examples (arduino:mbed:envie_m7, envie_m7)	28m 1s
compile-examples (arduino:mbed:envie_m7:target_core=cm4, envie_m7_core_cm4)	5m 42s
compile-examples (arduino:mbed:nicla_voice, nicla_voice)	7m 27s
compile-examples (arduino:mbed:nicla_vision, nicla_vision)	24m 31s
compile-examples (arduino:mbed:nanorp2040connect, nanorp2040connect)	21m 7s
	3h 22m 9s

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