Add integration with PEFT for loading adapters on meta device

[Butanium]

Currently i have to dispatch my language model before calling model.load_adapter(adapter_id), otherwise i get

  File "/mnt/nw/home/c.dumas/projects/diffing-toolkit/.venv/lib/python3.12/site-packages/safetensors/torch.py", line 381, in load_file
    with safe_open(filename, framework="pt", device=device) as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
safetensors_rust.SafetensorError: device meta is invalid

would be nice if nnsight could load the config and load the weight when dispatching. This is low priority though