[1/7] lnwire: add new Gossip 1.75 messages #11666

Job	Run time
check commits	17m 33s
RPC and mobile compilation check	2m 34s
cross compilation	16m 18s
lint code	7m 37s
check pinned dependencies (google.golang.org/grpc v1.53.0)	5s
sample configuration check	1m 3s
check pinned dependencies (github.com/golang/protobuf v1.5.2)	5s
Sqlc check	32s
run unit tests (btcd unit-cover)	18m 4s
run unit tests (unit tags="kvdb_etcd")	20m 44s
check release notes updated	7s
run unit tests (unit tags="kvdb_postgres")	19m 8s
run ubuntu itests (btcd, backend=btcd)	48m 53s
run unit tests (unit tags="kvdb_sqlite")	18m 11s
run ubuntu itests (bitcoind, backend=bitcoind)	1h 2m 7s
run windows itest	59m 41s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	1h 1m 40s
run unit tests (btcd unit-race)	45m 24s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	1h 1m 10s
run unit tests (unit-module)	1m 0s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1h 20m 25s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 44m 43s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	1h 5m 3s
run ubuntu itests (neutrino, backend=neutrino)	1h 1m 9s
	12h 53m 16s

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