* Add Volcengine responses adapter
* fix llms/volcengine/responses/transformation.py:507:9: F841 Local variable `origin` is assigned to but never used
fix llms/volcengine/responses/transformation.py:95: error: Argument "headers" to "VolcEngineError" has incompatible type
add more supported optional params
removed redundant manual logging/utils fallbacks so litellm/__init__.py uses the registry only.