JNI-75 Wrap outgoing rating preview.

src/pEp.yml2

@@ -202,6 +202,11 @@ namespace pEp {
                 returns Rating rating
             );
 
+        method outgoing_message_rating_preview(
+                in message msg,
+                returns Rating rating
+            );
+
         method get_identity(
                 in string address,
                 in string userid,

test/Testing.java

@@ -84,7 +84,8 @@ class Testing {
 
         msg.setDir(Message.Direction.Outgoing);
         try {
-            System.out.println(e.outgoing_message_rating(msg));
+            System.out.println("Rating preview: " + e.outgoing_message_rating_preview(msg));
+            System.out.println("Rating" + e.outgoing_message_rating(msg));
         }
         catch (pEpException ex) {
             System.out.println("cannot measure outgoing message rating");