Model: Add support for HuggingFace config and bad_words_ids

This is necessary for Kobold's API. Current models use bad_words_ids
in generation_config.json, but for some reason, they're also present
in the model's config.json.

Signed-off-by: kingbri <bdashore3@proton.me>

common/utils.py

@@ -18,3 +18,9 @@ def prune_dict(input_dict):
     """Trim out instances of None from a dictionary."""
 
     return {k: v for k, v in input_dict.items() if v is not None}
+
+
+def flat_map(input_list):
+    """Flattens a list of lists into a single list."""
+
+    return [item for sublist in input_list for item in sublist]