feat(sorting): Leaderboard now gets sorted initially by average performance and not alphabetically.

core.py

@@ -115,6 +115,8 @@ def update_df(
     # aggregate results over languages per task
     df = aggregate_langs(df, tasks, langs)
 
+    df = df.sort_values(by='Average', ascending=False)
+
     # filter models by search bar and model type
     df = search_model(df, model_query)
     df = filter_type(df, model_types)