* add prompt format and stopping_words for qwen mdoel * performance optimization * optimize * update * meet comments
* reset bigdl-llm loader options with default value * remove options which maybe complex for naive users
* initially add text_generation_webui support * add env requirements install * add necessary dependencies * update for starting webui * update shared and noted to place models * update heading of part3 * meet comments * add copyright license * remove extensions * convert tutorial to windows side * add warm-up to optimize performance