Frontend: update cpu widget to show per-core usage, clock, and temper… #2790

Job	Run time
python-tests	3m 5s
frontend-tests	2m 17s
deploy-docker-images (bootstrap, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	6m 21s
deploy-docker-images (core, blueos, linux/arm/v7,linux/arm64/v8,linux/amd64)	14m 3s
deploy-raspberry-image	-1s
	25m 45s

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