CI for Backend and Frontend #5157

Job	Run time
backend-tests	1m 19s
backend-isort	9s
backend-flake8	10s
backend-black	8s
backend-zpretty	10s
classic-flake8	12s
classic-black	9s
classic-isort	13s
classic-zpretty	9s
frontend-eslint	48s
i18n sync	47s
frontend-prettier	18s
frontend-tests	44s
release (backend, backend, Dockerfile)	1m 0s
release (frontend, frontend, Dockerfile)	4m 40s
release (classic, classic, Dockerfile)	1m 21s
	12m 17s

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