How to use TabPFN in offline mode

[luoda888]

1. Can we download the ckpt and use in offline mode (no internet)?
2. Can we use it in transformers (model.from_pretrained(pth))?

[LeoGrin]

The readme of this repo now contains instructions for offline usage (in the faq). Closing the issue, feel free to reopen if the instructions are unclear or if some things are missing.