Added the number of duplicates to the toast text.

Author: Jared234

app/src/main/java/org/schabi/newpipe/local/dialog/PlaylistAppendDialog.java

@@ -181,7 +181,7 @@ private void onPlaylistSelected(@NonNull final LocalPlaylistManager manager,
         String toastText = getString(R.string.playlist_add_stream_success);
 
         if (numOfDuplicates > 0) {
-            toastText = getString(R.string.playlist_add_stream_success_duplicate);
+            toastText = getString(R.string.playlist_add_stream_success_duplicate, numOfDuplicates);
         }
 
         final Toast successToast = Toast.makeText(getContext(), toastText, Toast.LENGTH_SHORT);

app/src/main/res/values/strings.xml

@@ -446,7 +446,7 @@
     <string name="delete_playlist_prompt">Delete this playlist\?</string>
     <string name="playlist_creation_success">Playlist created</string>
     <string name="playlist_add_stream_success">Playlisted</string>
-    <string name="playlist_add_stream_success_duplicate">Playlisted duplicate</string>
+    <string name="playlist_add_stream_success_duplicate">Duplicate added %d time(s)</string>
     <string name="playlist_thumbnail_change_success">Playlist thumbnail changed.</string>
     <string name="playlist_no_uploader">Auto-generated (no uploader found)</string>
     <!-- Players -->