[Inspection Service] Add simple consensus health check endpoint. #71892

Job	Run time
file_change_determinator	7s
rust-doc-tests	5m 13s
rust-unit-tests	0s
rust-consensus-only-smoke-test	0s
rust-consensus-only-unit-test	0s
rust-lints	3m 41s
rust-smoke-tests	27m 17s
general-lints	26s
rust-cargo-deny	1m 41s
rust-check-merge-base	1m 15s
rust-targeted-unit-tests	5m 39s
rust-build-cached-packages	2m 6s
rust-cryptohasher-domain-separation-check	0s
	47m 25s

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