[ADDED] API to read Reply subject from micro.Request (#1589)

Fixes #1579

Signed-off-by: Massimo Costa <costa.massimo@gmail.com>

micro/request.go

@@ -58,6 +58,9 @@ type (
 
 		// Subject returns underlying NATS message subject.
 		Subject() string
+
+		// Reply returns underlying NATS message reply subject.
+		Reply() string
 	}
 
 	// Headers is a wrapper around [*nats.Header]
@@ -186,6 +189,11 @@ func (r *request) Subject() string {
 	return r.msg.Subject
 }
 
+// Reply returns underlying NATS message reply subject.
+func (r *request) Reply() string {
+	return r.msg.Reply
+}
+
 // Get gets the first value associated with the given key.
 // It is case-sensitive.
 func (h Headers) Get(key string) string {