Add support for the LFM2 model

[kadirnar]

🚀 The feature, motivation and pitch

It shows better results than Qwen3 in the benchmark table. It has both large and small models. Adding this could be great.

Blog: https://www.liquid.ai/blog/liquid-foundation-models-v2-our-second-series-of-generative-ai-models HF: https://huggingface.co/LiquidAI/LFM2-350M

Alternatives

No response

Additional context

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