CI for Backend and Frontend #5165

Job	Run time
backend-flake8	12s
backend-isort	12s
backend-black	9s
backend-tests	1m 16s
backend-zpretty	9s
classic-black	8s
classic-flake8	9s
classic-isort	10s
classic-zpretty	9s
i18n sync	43s
frontend-eslint	54s
frontend-prettier	7s
frontend-tests	55s
release (backend, backend, Dockerfile)	1m 2s
release (frontend, frontend, Dockerfile)	4m 26s
release (classic, classic, Dockerfile)	1m 15s
	11m 56s

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