Add bikeshedding TODO item

Author: NicolasHug

src/torchcodec/decoders/_core/_metadata.py

@@ -203,6 +203,8 @@ def best_audio_stream(self) -> AudioStreamMetadata:
         return metadata
 
 
+# TODO-AUDIO: This is user-facing. Should this just be `get_metadata`, without
+# the "container" name in it? Same below.
 def get_container_metadata(decoder: torch.Tensor) -> ContainerMetadata:
     """Return container metadata from a decoder.