Add getScore() method to FolderNameInfo class.

getScore() is not used in launcher3 but exposed for testing purpose.

Change-Id: I22e674dabc3c24879c1c1b5881f9fc6005404998

src/com/android/launcher3/folder/FolderNameInfo.java

@@ -50,6 +50,10 @@ public final class FolderNameInfo implements Parcelable {
         return mLabel;
     }
 
+    public double getScore() {
+        return mScore;
+    }
+
     /**
      * Used to package this object into a {@link Parcel}.
      *