CI for Backend and Frontend #2778

Job	Run time
backend-flake8	14s
backend-black	11s
backend-isort	9s
backend-zpretty	9s
classic-black	13s
classic-flake8	12s
backend-tests	1m 59s
classic-isort	12s
classic-zpretty	12s
i18n sync	57s
frontend-eslint	46s
frontend-prettier	9s
frontend-tests	1m 1s
release (backend, backend, Dockerfile)	4m 0s
release (frontend, frontend, Dockerfile)	6m 31s
release (classic, classic, Dockerfile)	3m 16s
	20m 11s

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