Support loading LFM2 GGUF (#41111)
* add gguf config mapping for lfm2
* add lfm2 tensor process to unsqueeze conv weights
* adjust values from gguf config to HF config
* add test for lfm2 gguf
* ruff
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Co-authored-by: Marc Sun <57196510+SunMarc@users.noreply.github.com>
