Added backend control plane implementation #1862

Job	Run time
Check Docker image (Debug)	2m 5s
Check Docker image (Release)	2m 37s
Check codespell conformance	11s
Check src clang-format conformance	29s
Check tests clang-format conformance	16s
Build Debug with g++-10	1m 59s
Build Debug with g++-12	4m 6s
Build Debug with g++-9	1m 19s
Build Debug with clang-13	4m 7s
Build Debug with g++-11	4m 8s
Build Debug with g++-13	3m 55s
Build Debug with clang-15	3m 51s
Build Release with g++-11	4m 7s
Build Debug with clang-18	4m 9s
Build Release with g++-9	1m 37s
Build Debug with clang-16	3m 58s
Build Debug with clang-14	3m 53s
Build Release with g++-12	4m 8s
Build Release with g++-10	2m 28s
Build Release with g++-13	3m 37s
Build Release with clang-15	4m 8s
Build Release with clang-16	4m 8s
Build Release with clang-14	2m 46s
Build Release with clang-13	4m 6s
Build Release with clang-18	4m 9s
Build Debug with clang-17	4m 9s
Build Release with clang-17	1m 26s
Codecov report upload	1s
	1h 21m 53s

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