New FluidTerm with STM32 Loader #964

Job	Run time
build (ubuntu-latest, noradio)	1m 58s
tests (ubuntu-latest, tests)	30s
build (ubuntu-latest, wifi)	2m 10s
build (ubuntu-latest, bt)	2m 8s
tests (macos-latest, tests)	1m 3s
build (macos-latest, noradio)	2m 3s
build (macos-latest, wifi)	2m 9s
tests (windows-latest, tests_nosan)	1m 28s
build (macos-latest, bt)	2m 5s
build (windows-latest, noradio)	5m 13s
build (windows-latest, wifi)	5m 30s
build (windows-latest, bt)	4m 47s
	31m 4s

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