[consensus] Add base committer tests #59346

Job	Run time
diff	12s
license-check	1m 23s
test (ubuntu-ghcloud)	12m 27s
test-extra (ubuntu-ghcloud)	15m 36s
simtest	9m 54s
release-notes-check	4s
windows-build (windows-ghcloud)	15m 6s
cargo-deny (advisories, licenses, bans, ...)	3m 59s
clippy	4m 54s
graphql-rpc	21m 16s
move-test	0s
rustfmt	19s
cutting a new execution layer	3m 57s
test-extra	0s
test	0s
	1h 29m 7s

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