Add LFM2

[stefannae]

LFM2 is a new generation of hybrid models developed by Liquid AI, specifically designed for edge AI and on-device deployment.

License:

• Apache Based. The license text is based on Apache 2.0 (with only a few changes), granting broad, royalty-free, and perpetual rights to use, modify, and distribute the model and its derivatives subject to thresholds on free use by large businesses.
• Commercial Use Threshold. Rights to use the model for commercial purposes end if your company's annual revenue exceeds $10 million USD.

Sources:
https://huggingface.co/LiquidAI/LFM2-2.6B
https://www.liquid.ai/lfm-license