Refactor run_hub_download function to remove token parameter

Add token argument to hf_download_file.py

Refactor download function to use hf_hub_download

Replace hf_hub_download with snapshot_download in run_hub_download function

Add hf_download_file.py script for downloading files from Hugging Face hub

Update comments and add new code for GPTQ (To Do #1)

Update links and remove unnecessary code

Merge branch 'main' of https://github.com/loka-tech/AIScripts

update readme

Update README.md

Add image and greeting to README

Update README.md with system requirements and usage instructions

Update README.md with new sections and links

Add llama.cpp quant and do things on To Do #1

Add AutoGPTQ testing script