Update tokenizer files

fix(root): Also fixes the tokenizer.json to prevent mismatches.

fix(tokenizer_config): Adjusts rstrip of special tokens.

Add files for Hugging Face's Optimum

fix(root): Replaces system by user to improve generation experience.

fix(genai_config): Adds extra EOS token to improve chat outputs.

Upload Phi-3-mini-128k-instruct ONNX models