[1/3] Graph RIP: refactor+graph: move all graph related DB code to the graph package #16711

Job	Run time
check commits	19m 12s
lint code	5m 52s
check pinned dependencies (google.golang.org/grpc v1.59.0)	3s
cross compilation	30m 59s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
check release notes updated	5s
run macOS itest	53m 16s
RPC and mobile compilation check	3m 15s
sample configuration check	1m 44s
Sqlc check	2m 39s
run ubuntu itests (btcd, backend=btcd cover=1)	32m 37s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	40m 38s
run unit tests (btcd unit-cover)	19m 16s
run windows itest	7m 4s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	40m 3s
run unit tests (unit tags="kvdb_etcd")	20m 56s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	41m 53s
run unit tests (unit tags="kvdb_postgres")	20m 22s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	53m 19s
run unit tests (unit tags="kvdb_sqlite")	18m 24s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 11m 4s
run unit tests (btcd unit-race)	40m 14s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	42m 38s
run unit tests (unit-module)	1m 3s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	1h 12m 23s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	42m 18s
run ubuntu itests (neutrino, backend=neutrino cover=1)	38m 51s
finish	3s
	12h 0m 15s

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