Added magnet link to download model files

[JonnoFTW]

See this issue: https://github.com/facebookresearch/llama/pull/73

[G2G2G2G]

or if it you want to save our bandwidth use this bit torrent link:

lmao that guy's great. Not that anyone actually cares about fb servers or bandwidth

However for llama.cpp adding this link it is legal grey area so I don't think it will be / should be added.

[antonkoenig]

Meta actually has the intention that researchers confirm the license before the download is possible. Their pull request bypasses that step. They will most likely not accept the pull request there. But it's visible in the open now.