Upload gravitar/namespace_metadata.json with huggingface_hub

gravitar/namespace_metadata.json

@@ -1 +1 @@
-{}
+{"display_name": "Gravitar", "description": "The player controls a small blue spacecraft. The game starts in a fictional solar system with several planets to explore. If the player moves his ship into a planet, he will be taken to a side-view landscape.\n\nFor a more detailed documentation, see [the ALE documentation](https://ale.farama.org/environments/gravitar)"}