build: add embedtest into native suite #2290

Job	Run time
Build slim tarball	1m 36s
aarch64-linux: with shared libraries	22m 13s
x86_64-linux: with shared libraries	27m 8s
aarch64-darwin: with shared libraries	29m 11s
x86_64-darwin: with shared libraries	40m 21s
	2h 0m 29s

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