Make supervisor a server and introduce modyn client #2039

Job	Run time
flake8	3m 5s
black	3m 12s
Build + Test (C++) (Release, gcc, g++, 11)	17m 15s
C++ Test Coverage (gets coverage of main branch, currently not main branch because no C++ on main)	25m 3s
Build + Test (C++) (Release, clang, clang++, 14)	20m 54s
format	9s
isort	5m 30s
Build + Test (C++) (Release, clang, clang++, 17, true)	29m 40s
Build + Test (C++) (Debug, gcc, g++, 11)	19m 6s
mypy-typechecking	5m 38s
pylint	3m 49s
Build + Test (C++) (Debug, gcc, g++, 12)	21m 53s
tidy	18m 30s
Build + Test (C++) (Debug, clang, clang++, 14)	19m 35s
unittests	10m 27s
Build + Test (C++) (Debug, clang, clang++, 17, true)	27m 13s
Build + Test (C++) (clang, clang++, 14, Tsan)	22m 40s
Build + Test (C++) (clang, clang++, 14, Asan)	28m 36s
dockerized-unittests	8m 16s
Comment Coverage Results	2s
integrationtests-asan	1h 12m 45s
integrationtests-debug	1h 9m 51s
integrationtests-release	1h 10m 43s
integrationtests-tsan	1h 20m 48s
	9h 44m 40s

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