feat(dl): add --repack flag to insert REPACK tag in output filenames

unshackle/core/titles/episode.py

@@ -156,6 +156,9 @@ class Episode(Title):
                     name=self.name or "",
                 ).strip()
 
+        if getattr(config, "repack", False):
+            name += " REPACK"
+
         if primary_video_track:
             resolution_token = _get_resolution_token(primary_video_track)
             if resolution_token: