Add the option on path creator to specify the incoming channel on blinded path #16704

Job	Run time
check commits	3m 10s
check pinned dependencies (google.golang.org/grpc v1.59.0)	4s
cross compilation	5m 51s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
lint code	1m 27s
run macOS itest	5m 54s
check release notes updated	3s
sample configuration check	5m 33s
RPC and mobile compilation check	5m 37s
Sqlc check	5m 37s
run ubuntu itests (btcd, backend=btcd cover=1)	5m 39s
run unit tests (btcd unit-cover)	5m 47s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	5m 49s
run windows itest	5m 32s
run unit tests (unit tags="kvdb_etcd")	4m 17s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	5m 49s
run unit tests (unit tags="kvdb_postgres")	1s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	5m 49s
run unit tests (unit tags="kvdb_sqlite")	1s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	5m 48s
run unit tests (btcd unit-race)	5m 39s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	5m 50s
run unit tests (unit-module)	1s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	5m 49s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	5m 49s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	5m 49s
run ubuntu itests (neutrino, backend=neutrino cover=1)	5m 48s
finish	3s
	1h 52m 40s

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