Feature request: Download models only once, then distribute it to nodes

[rabejens]

I am just trying exo with a Mac mini and a Linux box. I am constantly running into problems with 401 errors from huggingface because the nodes try to download the models at once and HF seems to throttle / limit concurrent downloads.

It would be a great addition if only one downloaded the model, and then pushed it to the other nodes.

And with slower Internet connections, I am having timeout issues with models taking a long time to download. It should be possible to disable / increase the timeouts.