docs(readme): add README file

Upload v1.0/gemma-4-e4b-it_q4/weight.bin with huggingface_hub

Upload v1.0/gemma-4-e4b-it_q4/tokenizer_config.json with huggingface_hub

Upload v1.0/gemma-4-e4b-it_q4/tokenizer.json with huggingface_hub

Upload v1.0/gemma-4-e4b-it_q4/config.json with huggingface_hub

initial commit