langchain

a79f5955 - Support extra tools argument for pandas agent toolkit (#11040)

Support extra tools argument for pandas agent toolkit (#11040) **Description** We support adding new tools in some toolkits already like the [SQLAgent toolkit](https://github.com/langchain-ai/langchain/blob/master/libs/langchain/langchain/agents/agent_toolkits/sql/base.py#L27). Related [SO](https://stackoverflow.com/questions/76583163/are-langchain-toolkits-able-to-be-modified-can-we-add-tools-to-a-pandas-datafra) thread This replicates the same functionality here, so users can add custom bespoke tools.