Update README.md

update README: full Qwen base model instructions, usage, family table

add README with results and usage

add Qwen2.5-7B VectraYX QLoRA adapter: README.md

add Qwen2.5-7B VectraYX QLoRA adapter: training_args.bin

add Qwen2.5-7B VectraYX QLoRA adapter: chat_template.jinja

add Qwen2.5-7B VectraYX QLoRA adapter: tokenizer_config.json

add Qwen2.5-7B VectraYX QLoRA adapter: tokenizer.json

add Qwen2.5-7B VectraYX QLoRA adapter: adapter_model.safetensors

add Qwen2.5-7B VectraYX QLoRA adapter: adapter_config.json

initial commit