docs: Add NVIDIA NIMs to Model Tab and Feature Table (#24146)
**Description:** Add NVIDIA NIMs to Model Tab and LLM Feature Table
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Co-authored-by: Hayden Wolff <hwolff@nvidia.com>
Co-authored-by: Erick Friis <erickfriis@gmail.com>
Co-authored-by: Erick Friis <erick@langchain.dev>
