CI for Backend and Frontend #3383

Job	Run time
backend-flake8	18s
backend-isort	17s
backend-tests	2m 0s
backend-black	17s
backend-zpretty	11s
classic-flake8	11s
classic-isort	11s
classic-black	11s
classic-zpretty	14s
frontend-eslint	48s
frontend-prettier	8s
i18n sync	47s
frontend-tests	48s
release (backend, backend, Dockerfile)	6m 28s
release (frontend, frontend, Dockerfile)	7m 34s
release (classic, classic, Dockerfile)	5m 17s
	25m 40s

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