lncli+wtclientrpc: remove wtclientrpc build tag, compile by default

lnrpc/wtclientrpc/config.go

@@ -0,0 +1,25 @@
+package wtclientrpc
+
+import (
+	"github.com/lightningnetwork/lnd/lncfg"
+	"github.com/lightningnetwork/lnd/watchtower/wtclient"
+)
+
+// Config is the primary configuration struct for the watchtower RPC server. It
+// contains all the items required for the RPC server to carry out its duties.
+// The fields with struct tags are meant to be parsed as normal configuration
+// options, while if able to be populated, the latter fields MUST also be
+// specified.
+type Config struct {
+	// Active indicates if the watchtower client is enabled.
+	Active bool
+
+	// Client is the backing watchtower client that we'll interact with
+	// through the watchtower RPC subserver.
+	Client wtclient.Client
+
+	// Resolver is a custom resolver that will be used to resolve watchtower
+	// addresses to ensure we don't leak any information when running over
+	// non-clear networks, e.g. Tor, etc.
+	Resolver lncfg.TCPResolver
+}