Mega Merge: Add new JSON GPU get power API, make Node-level get power JSON API nested, enable multi-platform build #1480

Job	Run time
verify-build	35s
check-code-format (ubuntu-latest, 3.7)	23s
build (11, boilerplate)	55s
build (10, boilerplate)	55s
build (9, boilerplate)	1m 2s
build (9, shared_debug_log)	1m 4s
build (9, shared_debug)	30s
build (9, static_debug_log)	31s
build (9, static_debug)	34s
build (9, shared_release_libjustify)	39s
	7m 8s

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