contractcourt: add rapid derived fuzz test for HtlcAuxBlob #16935

Job	Run time
RPC and mobile compilation check	1m 39s
Sqlc check	2m 45s
check commits	8m 26s
cross compilation	30m 41s
lint code	3m 45s
sample configuration check	32s
run unit tests (btcd unit-cover)	19m 20s
run unit tests (unit tags="kvdb_etcd")	21m 15s
check pinned dependencies (google.golang.org/grpc v1.59.0)	4s
run macOS itest	51m 18s
run unit tests (unit tags="kvdb_postgres")	19m 59s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
run unit tests (unit tags="kvdb_sqlite")	19m 5s
run unit tests (btcd unit-race)	40m 4s
run windows itest	7m 32s
run unit tests (unit-module)	1m 7s
run ubuntu itests (btcd, backend=btcd cover=1)	30m 7s
run ubuntu itests (bitcoind, backend=bitcoind cover=1)	39m 34s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	38m 17s
check release notes updated	3s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling" cover=1)	38m 48s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	53m 44s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	23m 58s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	43m 29s
run ubuntu itests (bitcoind-postgres-nativesql, backend=bitcoind dbbackend=postgres nativesql=true)	1h 8m 8s
run ubuntu itests (bitcoind-sqlite-nativesql, backend=bitcoind dbbackend=sqlite nativesql=true)	43m 3s
run ubuntu itests (neutrino, backend=neutrino cover=1)	36m 37s
finish	2s
	10h 43m 26s

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