Implement `blockbeat` #16924

Job	Run time
Sqlc check	2m 42s
lint code	5m 46s
cross compilation	30m 45s
check commits	27m 6s
RPC and mobile compilation check	2m 50s
sample configuration check	1m 29s
run unit tests (btcd unit-cover)	19m 23s
run unit tests (unit tags="kvdb_etcd")	20m 45s
check pinned dependencies (google.golang.org/grpc v1.59.0)	4s
run macOS itest	26m 55s
run unit tests (unit tags="kvdb_postgres")	20m 13s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
run unit tests (unit tags="kvdb_sqlite")	18m 56s
check release notes updated	5s
run unit tests (btcd unit-race)	3h 40m 8s
run ubuntu itests (btcd, backend=btcd cover=1)	18m 49s
run unit tests (unit-module)	1m 3s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	24m 10s
run windows itest	8m 41s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	23m 35s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	24m 30s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	33m 5s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	41m 32s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	24m 9s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	41m 17s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	24m 53s
run ubuntu itests (neutrino, backend=neutrino cover=1)	22m 6s
finish	2s
	11h 25m 3s

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