`LightningPayment` first hop custom records #13816

Job	Run time
check pinned dependencies (google.golang.org/grpc v1.59.0)	4s
check commits	6m 33s
lint code	4m 43s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	5s
cross compilation	13m 51s
run macOS itest	1h 0m 0s
check release notes updated	4s
RPC and mobile compilation check	2m 10s
sample configuration check	35s
Sqlc check	29s
run ubuntu itests (btcd, backend=btcd)	40m 56s
run unit tests (btcd unit-cover)	6m 58s
run ubuntu itests (bitcoind, backend=bitcoind)	52m 16s
run windows itest	42m 55s
run unit tests (unit tags="kvdb_etcd")	18m 9s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	52m 3s
run unit tests (unit tags="kvdb_postgres")	17m 50s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	53m 44s
run unit tests (unit tags="kvdb_sqlite")	16m 38s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1h 11m 36s
run unit tests (btcd unit-race)	34m 44s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 24m 47s
run unit tests (unit-module)	1m 5s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	54m 40s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	1h 25m 46s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	54m 55s
run ubuntu itests (neutrino, backend=neutrino)	50m 14s
	13h 47m 50s

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