wtclient: add DeactivateTower and TerminateSession commands #13082

Job	Run time
check commits	4m 56s
cross compilation	7m 49s
lint code	4m 38s
check pinned dependencies (google.golang.org/grpc v1.56.3)	3s
check release notes updated	3s
check pinned dependencies (github.com/golang/protobuf v1.5.3)	4s
RPC and mobile compilation check	1m 34s
sample configuration check	38s
Sqlc check	26s
run ubuntu itests (btcd, backend=btcd)	38m 45s
run unit tests (btcd unit-cover)	14m 32s
run ubuntu itests (bitcoind, backend=bitcoind)	48m 1s
run windows itest	52m 35s
run unit tests (unit tags="kvdb_etcd")	17m 12s
run ubuntu itests (bitcoind-notxindex, backend="bitcoind notxindex")	48m 39s
run unit tests (unit tags="kvdb_postgres")	16m 1s
run ubuntu itests (bitcoind-rpcpolling, backend="bitcoind rpcpolling")	48m 58s
run unit tests (unit tags="kvdb_sqlite")	15m 16s
run ubuntu itests (bitcoind-etcd, backend=bitcoind dbbackend=etcd)	1h 3m 40s
run unit tests (btcd unit-race)	32m 25s
run ubuntu itests (bitcoind-postgres, backend=bitcoind dbbackend=postgres)	1h 18m 26s
run unit tests (unit-module)	51s
run ubuntu itests (bitcoind-sqlite, backend=bitcoind dbbackend=sqlite)	50m 40s
run ubuntu itests (neutrino, backend=neutrino)	47m 30s
	9h 53m 42s

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